Password-less Strategy

Four steps to Password-less

Over the past few years, Microsoft has continued their commitment to enabling a world without passwords. At Microsoft Ignite 2017, we shared our four-step approach to password-less. Password-less approach

1. Develop a password replacement offering

Before you move away from passwords, you need something to replace them. With Windows 10, Microsoft introduced Windows Hello for Business, a strong, hardware protected two-factor credential that enables single-sign on to Azure Active Directory and Active Directory.

Deploying Windows Hello for Business is the first step towards password-less. With Windows Hello for Business deployed, it coexists with password nicely. Users are likely to use Windows Hello for Business because of its convenience, especially when combined with biometrics. However, some workflows and applications may still need passwords. This early stage is about implementing an alternative and getting users used to it.

2. Reduce user-visible password surface area

With Windows Hello for Business and passwords coexisting in your environment, the next step towards password-less is to reduce the password surface. The environment and workflows need to stop asking for passwords. The goal of this step is to achieve a state where the user knows they have a password, but they never use it. This state helps decondition users from providing a password any time a password prompt shows on their computer. This is how passwords are phished. Users who rarely, if at all, use their password are unlikely to provide it. Password prompts are no longer the norm.

3. Transition into a password-less deployment

Once the user-visible password surface has been eliminated, your organization can begin to transition those users into a password-less world. A world where:

  • the user never types their password
  • the user never changes their password
  • the user does not know their password

In this world, the user signs in to Windows 10 using Windows Hello for Business and enjoys single sign-on to Azure and Active Directory resources. If the user is forced to authenticate, their authentication uses Windows Hello for Business.

4. Eliminate passwords from the identity directory

The final step of the password-less story is where passwords simply do not exist. At this step, identity directories no longer persist any form of the password. This is where Microsoft achieves the long-term security promise of a truly password-less environment.

Methodology

The four steps to password-less provides a overall view of how Microsoft envisions the road to password-less. But the road to password-less is frequently traveled and derailed by many. The scope of work is vast and filled with many challenges and frustrations. Nearly everyone wants the instant gratification of password-less, but can easily become overwhelmed in any of the steps. You are not alone and Microsoft understands. While there are many ways to accomplish password-less, here is one recommendation based on several years of research, investigation, and customer conversations.

Prepare for the Journey

The road to password-less is a journey. The duration of that journey varies from each organization. It is important for IT decision makers to understand the criteria that influences the length of the journey.

The most intuitive answer is the size of the organization, and that would be correct. However, what exactly determines size. One way to break down the size of the organization is:

  • Number of departments

  • Organization or department hierarchy

  • Number and type of applications and services

  • Number of work personas

  • Organization's IT structure

Number of departments

The number of departments within an organization varies. Most organizations have a common set of departments such as executive leadership, human resources, accounting, sales, and marketing. Other organizations will have those departments and additional ones such research and development or support. Small organizations may not segment their departments this explicitly while larger ones may. Additionally, there may be sub-departments, and sub-departments of those sub-departments as well.

You need to know all the departments within your organization and you need to know which departments use computers and which do not. It is fine if a department does not use computer (probably rare, but acceptable). This is one less department with which you need to concern yourself. Nevertheless, ensure this department is in your list and you have assessed it is not applicable for password-less.

Your count of the departments must be thorough and accurate, as well as knowing the stakeholders for those departments that will you and your staff on the road to password-less. Realistically, many of us lose sight of our organization chart and how it grows or shrinks over time. This is why you need to inventory all of them. Also, do not forget to include external departments such as vendors or federated partners. If your organizations goes password-less, but partners continue to use passwords and then access your corporate resources, you should know about it and include them in your password-less strategy.

Organization or department hierarchy

Organization and department hierarchy is the management layers within the departments or the organization as a whole. How the device is used, what applications and how they are used most likely differ between each department, but also within the structure of the department. To determine the correct password-less strategy, you need to know these differences across your organization. An executive leader is likely to use their device differently than a member of middle management in the sales department. Both of those use cases are likely different than how an individual contributor in the customer service department uses their device.

Number and type of applications and services

The number of applications within an organization is simply astonishing and rarely is there one centralized list that is accurate. Applications and services are the most critical item in your password-less assessment. Applications and services take considerable effort to move to a different type of authentication. That is not to say changing policies and procedures is not a daunting task, but there is something to be said of updating a company's set of standard operating procedure and security policies compared to changing 100 lines (or more) of authentication code in the critical path of your internally developed CRM application.

Capturing the number of applications used is easier once you have the departments, their hierarchy, and their stakeholders. In this approach, you should have an organized list of departments and the hierarchy in each. You can now associate the applications that are used by all levels within each department. You'll also want to document whether the application is internally developed or commercially available off-the-shelf (COTS). If the later, document the manufacture and the version. Also, do not forget web-based applications or services when inventorying applications.

Number of work personas

Work personas is where the three previous efforts converge. You know the departments, the organizational levels within each department, the numbers of applications used by each, respectively, and the type of application. From this you want to create a work persona.

A work persona classifies a category of user, title or role (individual contributor, manager, middle manager, etc), within a specific department to a collection of applications used. There is a high possibility and probability that you will have many work personas. These work personas will become units of work an you will refer to them in documentation and in meetings. You need to give them a name.

Give your personas easy and intuitive name like Abby Accounting, Mark Marketing, or Sue Sales. If the organization levels are common across departments then decide on a first name that represents the common levels in a department. For example, Abby could be the first name of an individual contributor in any given department, while the first name Sue could represent someone from middle management in any given department. Additionally, you can use suffixes such as (I, II, Senior, etc.) to further define departmental structure for a given persona.

Ultimately, create a naming convention that does not require your stakeholders and partners to read through a long list of tables or that needs a secret decoder ring. Also, if possible, try to keep the references as names of people. After all, you are talking about a person, who is in that department, who uses that specific software.

Organization's IT structure

IT department structures can vary more than the organization. Some IT departments are centralized while others are decentralized. Also, the road to password-less will likely have you interacting with the client authentication team, the deployment team, the security team, the PKI team, the Active Directory team, the cloud team, and the list continues. Most of these teams will be your partner on your journey to password-less. Ensure there is a password-less stakeholder on each of these teams and that the effort is understood and funded.

Assess your Organization

You have a ton of information. You have created your work personas, you identified your stakeholders throughout the different IT groups. Now what?

By now you can see why its a journey and not a weekend project. You need to investigate user-visible password surfaces for each of your work personas. Once you identified the password surfaces, you need to mitigate them. Resolving some password surfaces are simple-- meaning a solution already exists in the environment and its a matter of moving users to it. Resolution to some passwords surfaces may exist, but are not deployed in your environment. That resolution results in a project that must be planned, tested, and then deployed. That is likely to span multiple IT departments with multiple people, and potentially one or more distributed systems. Those types of projects take time and need dedicated cycles. This same sentiment is true with in-house software development. Even with agile development methodologies, changing the way someone authenticates to an application is critical. Without the proper planning and testing, it has the potential to severely impact productivity.

How long does it take to reach password-less? The answer is "it depends". It depends on the organizational alignment of a password-less strategy. Top-down agreement that password-less is the organization's goal makes conversations much easier. Easier conversations means less time spent convincing people and more time spent moving forward toward the goal. Top-down agreement on password-less as a priority within the ranks of other on-going IT projects helps everyone understand how to prioritize existing projects. Agreeing on priorities should reduce and minimize manager and executive level escalations. After these organizational discussions, modern project management techniques are used to continue the password-less effort. The organization allocates resources based on the priority (after they agreed on the strategy). Those resources will:

  • work through the work personas
  • organize and deploy user acceptance testing
  • evaluate user acceptance testing results for user-visible password surfaces
  • work with stakeholders to create solutions that mitigate user-visible password surfaces
  • add the solution to the project backlog and prioritize against other projects
  • deploy solution
  • User acceptance testing to confirm the solution mitigates the user-visible password surface
  • Repeat as needed

Your organization's journey to password-less may take some time to get there. Counting the number of work personas and the number of applications is probably a good indicator of the investment. Hopefully, your organization is growing, which means that the list of personas and the list of applications is unlikely to shrink. If the work to go password-less today is n, then it is likely that to go password-less tomorrow is n x 2 or perhaps more, n x n. Do not let the size or duration of the project be a distraction. As you progress through each work persona, the actions and tasks will become more familiar for you and your stakeholders. Scope the project to sizable, realistic phases, pick the correct work personas, and soon you will see parts of your organization transition to password-less.

Where to start?

What is the best guidance for kicking off the journey to password-less? You will want to show you management a proof of concept as soon as possible. Ideally, you want to show this at each step of your password-less journey. Keeping password-less top of mind and showing consistent progress keeps everyone focused.

Work persona

You begin with your work personas. These were part of your preparation process. They have a persona name, such as Abby Accounting II, or any other naming convention your organization defined. That work persona includes a list of all the applications that Abby uses to perform her assigned duties in the accounting department. To start, you need to pick a work persona. This is the targeted work persona you will enable to climb the password-less steps.

Important

Avoid using any work personas from your IT department. This is probably the worst way to start the password-less journey. IT roles are very difficult and time consuming. IT workers typically have multiple credentials, run a multitude of scripts and custom applications, and are the worst offenders of password usage. It is better to save these work personas for the middle or end of your journey.

Review your collection of work personas. Early in your password-less journey, identify personas that have the fewest applications. These work personas could represent an entire department or two. These are the perfect work personas for your proof-of-concept or pilot.

Most organizations host their proof of concept in a test lab or environment. To do that with password-less may be more challenging and take more time. To test in a lab, you must first duplicate the environment of the targeted persona. This could be a few days or several weeks depending on the complexity of targeted work persona.

You will want to balance testing in a lab with providing results to management quickly. Continuing to show forward progress on your password-less journey is always good thing. If there are ways you can test in production with low or now risk, that may be advantageous to your time line.

The Process

The journey to password-less is to take each work persona through each password-less step. In the beginning, we encourage working with one persona at a time to ensure team members and stakeholders are familiar with the process. Once comfortable with the process, you can cover as many work personas in parallel as resources allow. The process looks something like

  1. Password-less replacement offering (Step 1)
    1. Identify test users that represent the targeted work persona.
    2. Deploy Windows Hello for Business to test users.
    3. Validate password and Windows Hello for Business work.
  2. Reduce User-visible Password Surface (Step 2)
    1. Survey test user workflow for password usage.
    2. Identify password usage and plan, develop, and deploy password mitigations.
    3. Repeat until all user password usage is mitigated.
    4. Remove password capabilities from the Windows.
    5. Validate all workflows do not need passwords.
  3. Transition into a password-less (Step 3)
    1. Awareness campaign and user education.
    2. Including remaining users that fit the work persona.
    3. Validate all users of the work personas do not need passwords.
    4. Configure user accounts to disallow password authentication.

After successfully moving a work persona to password-less, you can prioritize the remaining work personas, and repeat the process.

Password-less replacement offering (Step 1)

THe first step to password-less is providing an alternative to passwords. Windows 10 provides an affordable and easy in-box alternative to passwords, Windows Hello for Business, a strong, two-factor authentication to Azure Active Directory and Active Directory.

Identify test users that represent the targeted work persona

A successful transition to password-less heavily relies on user acceptance testing. It is impossible for you to know how every work persona goes about their day-to-day activities, or to accurately validate them. You need to enlist the help of users that fit the targeted work persona. You only need a few users from the targeted work persona. As you cycle through step 2, you may want to change a few of the users (or add a few) as part of your validation process.

Deploy Windows Hello for Business to test users

Next, you will want to plan your Windows Hello for Business deployment. Your test users will need an alternative way to sign-in during step 2 of the password-less journey. Use the Windows Hello for Business Planning Guide to help learn which deployment is best for your environment. Next, use the Windows Hello for Business deployment guides to deploy Windows Hello for Business.

With the Windows Hello for Business infrastructure in place, you can limit Windows Hello for Business enrollments to the targeted work personas. The great news is you will only need to deploy the infrastructure once. When other targeted work personas need to provision Windows Hello for Business, you can simply add them to a group. You will use the first work persona to validate your Windows Hello for Business deployment.

Note

There are many different ways to connect a device to Azure. Deployments may vary based on how the device is joined to Azure Active Directory. Review your planning guide and deployment guide to ensure additional infrastructure is not needed for an additional Azure joined devices.

Validate password and Windows Hello for Business work

In this first step, passwords and Windows Hello for Business must coexist. You want to validate that while your targeted work personas can sign in and unlock using Windows Hello for Business, but they can also sign-in, unlock, and use passwords as needed. Reducing the user-visible password surface too soon can create frustration and confusion with your targeted user personas.

Reduce User-visible Password Surface (Step 2)

Before you move to step 2, ensure you have:

  • selected your targeted work persona.
  • identified your test users that represented the targeted work persona.
  • deployed Windows Hello for Business to test users.
  • validated passwords and Windows Hello for Business both work for the test users.

Survey test user workflow for password usage

Now is the time to learn more about the targeted work persona. You have a list of applications they use, but you do not know what, why, when, and how frequently. This information is important as your further your progress through step 2.

Test users create the workflows associated with the targeted work persona. Their initial goal is to do one simply task. Document password usage. This list is not a comprehensive one, but it gives you an idea of the type of information you want. The general idea is to learn about all the scenarios in which that work persona encounters a password. A good approach is:

  • What is the name of the application that asked for a password?.
  • Why do they use the application that asked for a password? (Example: is there more than one application that can do the same thing?).
  • What part of their workflow makes them use the application? Try to be as specific as possible (I use application x to issue credit card refunds for amounts over y.).
  • How frequently do you use this application in a given day? week?
  • Is the password you type into the application the same as the password you use to sign-in to Windows?

Some organizations will empower their users to write this information while some may insist on having a member of the IT department shadow them. An objective viewer may notice a password prompt that the user overlooks simply because of muscle memory. As previously mentioned, this information is critical. You could miss one password prompt which could delay the transition to password-less.

Identify password usage and plan, develop, and deploy password mitigations

Your test users have provided you valuable information that describes the how, what, why and when they use a password. It is now time for your team to identify each of these password use cases and understand why the user must use a password.

Create a master list of the scenarios. Each scenario should have a clear problem statement. Name the scenario with a one-sentence summary of the problem statement. Include in the scenario the results of your team's investigation as to why the user is prompted by a password. Include relevant, but accurate details. If its policy or procedure driven, then include the name and section of the policy that dictates why the workflow uses a password.

Keep in mind your test users will not uncover all scenarios. Some scenarios you will need to force on your users because they low percentage scenarios. Remember to include scenarios like:

  • Provisioning a new brand new user without a password.
  • Users who forget the PIN or other remediation flows when the strong credential is unusable.

Next, review your master list of scenarios. You can start with the workflows that are dictated by process or policy or, you can begin with workflows that need technical solutions-- whichever of the two is easier or quicker. This will certainly vary by organization.

Start mitigating password usages based on the workflows of your targeted personas. Document the mitigation as a solution to your scenario. Don't worry about the implementation details for the solution. A overview of the changes needed to reduce the password usages is all you need. If there are technical changes needed either infrastructure or code changes-- the exact details will likely be included in the project documentation. However your organization tracks projects, create a new project in that system. Associate your scenario to that project and start the processes needed to get that project funded.

Mitigating password usage with applications is one or the more challenging obstacle in the journey to password-less. If your organization develops the application, then you are in better shape the common-off-the-shelf software (COTS).

The ideal mitigation for applications that prompt the user for a password is to enable those enable those applications to use an existing authenticated identity, such as Azure Active Directory or Active Directory. Work with the applications vendors to have them add support for Azure identities. For on-premises applications, have the application use Windows integrated authentication. The goal for your users should be a seamless single sign-on experience where each user authenticates once-- when they sign-in to Windows. Use this same strategy for applications that store their own identities in their own databases.

Each scenario on your master list should now have a problem statement, an investigation as to why the password was used, and a mitigation plan on how to make the password usage go away. Armed with this data, one-by-one, close the gaps on user-visible passwords. Change policies and procedures as needed, make infrastructure changes where possible. Convert in-house applications to use federated identities or Windows integrated authentication. Work with third-party software vendors to update their software to support federated identities or Windows integrated authenticate.

Repeat until all user password usage is mitigated

Some or all of your mitigations are in place. You need to validate your solutions have solved their problem statements. This is where you rely on your test users. You want to keep a good portion of your first test users, but this is a good opportunity to replace a few or add a few. Survey test users workflow for password usage. If all goes well, you have closed most or all the gaps. A few are likely to remain. Evaluate your solutions and what went wrong, change your solution as needed until you reach a solution that removes your user's need to type a password. If your stuck, others might be too. Use the forums from various sources or your network of IT colleague to describe your problem and see how others are solving it. If your out of options, contact Microsoft for assistance.

Remove password capabilities from the Windows

You believe you have mitigates all the password usage for the targeted work persona. Now comes the true test-- configure Windows so the user cannot use a password.

Windows provides two ways to prevent your users from using passwords. You can use an interactive logon security policy to only allow Windows Hello for Business sign-in and unlocks, or you can exclude the password credential provider.

Security Policy

You can use Group Policy to deploy an interactive logon security policy setting to the computer. This policy setting is found under Computer Configuration > Policies > Windows Settings > Local Policy > Security Options. The name of the policy setting depends on the version of the operating systems you use to configure Group Policy. securityPolicyLocation

Windows Server 2016 and earlier The policy name for these operating systems is Interactive logon: Require smart card. securityPolicyBefore2016

Windows 10, version 1703 or later using Remote Server Administrator Tools The policy name for these operating systems is Interactive logon: Require Windows Hello for Business or smart card. securityPolicyRSAT

When you enables this security policy setting, Windows prevents users from signing in or unlocking with a password. The password credential provider remains visible to the user. If a user tries to use a password, Windows informs the user they must use Windows Hello for Business or a smart card.

Excluding the password credential provider

You can use Group Policy to deploy an administrative template policy settings to the computer. This policy settings is found under Computer Configuration > Policies > Administrative Templates > Logon HideCredProvPolicy

The name of the policy setting is Exclude credential providers. The value to enter in the policy to hide the password credential provider is 60b78e88-ead8-445c-9cfd-0b87f74ea6cd. HideCredProvPolicy2

Excluding the password credential provider hides the password credential provider from Windows and any application that attempts to load it. This prevents the user from entering a password using the credential provider. However, this does not prevent applications from creating their own password collection dialogs and prompting the user for a password using custom dialogs.

Validate all workflows do not need passwords

This is the big moment. You have identified password usage, developed solutions to mitigate password usage, and have removed or disabled password usage from Windows. In this configuration, your users will not be able to use a passwords. Users will be blocked is any of their workflows ask them for a password. Ideally, your test users should be able to complete all the work flows of the targeted work persona without any password usage. Do not forget those low percentage work flows, such as provisioning a new user or a user that forgot their PIN or cannot use their strong credential. Ensure those scenarios are validated as well.

Transition into a password-less deployment (Step 3)

Congratulations! You are ready to transition one or more portions of your organization to a password-less deployment. You have validated the targeted work-persona is ready to go where the user no longer needs to know or use their password. You are just few steps away from declaring success.

Awareness and user education

In this last step, you are going to include the remaining users that fit the targeted work persona to the wonderful world of password-less. Before you do this, you want to invest in an awareness campaign.

An awareness campaign is introduces the users to the new way of authenticating to their device, such as using Windows Hello for Business. The idea of the campaign is to positively promote the change to the users in advance. Explain the value and why your company is changing. The campaign should provide dates and encourage questions and feedback. This campaign can coincide user education, where you can show the users the changes and, if your environment allows, enable the users to try the experience out.

Including remaining users that fit the work persona

You have implemented the awareness campaign for the targeted users. These users are informed and ready to transition to password-less. Add the remaining users that match the targeted work persona to your deployment.

Validate all users of the work personas do not need passwords.

You have successfully transitioned all users for the targeted work persona to password-less. Monitor the users within the work persona to ensure they do not encounter any issues while working in a password-less environment.

Track all reported issues. Set priority and severity to each reported issue and have your team triage the issues appropriately. As you triage issues, some things to consider are:

  • Is the reporting user performing a task outside the work persona?
  • Is the reported issue affecting the entire work persona, or only specific users?
  • Is the outage a result of a misconfiguration?
  • Is the outage a overlooked gap from step 2?

Each organization's priority and severity will differ however most organizations consider work stoppages fairly significant. Your team should pre-define levels of priority and severity. With each of these levels, create service level agreements (SLAs) for each combination of severity and priority and hold everyone accountable to those agreements. Reactive planning enables people to spend more time on the issue and resolving it and less time on process.

Resolve the issues per your service level agreements. Higher severity items may require returning some or all of the user's password surface. Clearly this is not the end goal but, do not let this slow your password-less momentum. Refer to how you reduced the user's password surface in step 2 and progress forward to a solution, deploying that solution and validating.

Configure user accounts to disallow password authentication.

You transitioned all the users for the targeted work persona to a password-less environment and you have successfully validated all their workflows. The last step to complete the password-less transition is to remove the user's knowledge of the password and prevent the authenticating authority from accepting passwords.

You can change the user's password to random data and prevent domain controllers from allowing users to use passwords for interactive sign-ins using an account configuration on the user object.

The account options on a user account includes an option -- Smart card is required for interactive logon, also known as (SCRIL).

Note

Do not confuse the Interactive Logon security policy for SCRIL. Security policies are enforced on the client (locally). A user account configured for SCRIL is enforced at the domain controller.

SCRIL setting on AD Users and Computers SCRIL setting for a user on Active Directory Users and Computers.

When you configure an user account for SCRIL, Active Directory changes the affected user's password to a random 128 bits of data. Additionally, domain controllers hosting the user account do not allow the user to sign-in interactively with a password. Also, users will no longer be troubled with needing to change their password when it expires, because passwords for SCRIL users in domains with a Windows Server 2012 R2 or early domain functional level do not expire. The users is effectively password-less because:

  • the do not know their password.
  • their password is 128 random bits of data and is likely to include non-typable characters.
  • the user is not asked to change their password
  • domain controllers do not allow passwords for interactive authentication

SCRIL setting from ADAC on Windows Server 2012 SCRIL setting for a user in Active Directory Administrative Center on Windows Server 2012.

Note

Although a SCRIL user's password never expires in early domains, you can toggle the SCRIL configuration on a user account (clear the check box, save the settings, select the check box and save the settings) to generate a new random 128 bit password. However, you should consider upgrading the domain to Windows Server 2016 domain forest functional level and allow the domain controller to do this for you automatically.

SCRIL setting from ADAC on Windows Server 2016 SCRIL setting for a user in Active Directory Administrative Center on Windows Server 2016.

Note

Windows Hello for Business was formerly known as Microsoft Passport.

Automatic password change for SCRIL configured users

Domains configured for Windows Server 2016 domain functional level can further secure the unknown password for a SCRIL enabled users by configuring the domain to automatically change the password for SCRIL users.

In this configuration, passwords for SCRIL configured users expired based on Active Directory password policy settings. When the SCRIL user authentication from a domain controller, the domain controller recognizes the password has expired, and automatically generates a new random 128 bit password for the user as part of the authentication. What is great about this feature is your users do not experience any change password notifications or experience any authentication outages. Rotate Password 2016

Note

Some components within Windows 10, such as Data Protection APIs and NTLM authentication, still need artifacts of a user possessing a password. This configuration provides interoperability with while reducing the usage surface while Microsoft continues to close the gaps to remove the password completely.

The Road Ahead

The information presented here is just the beginning. We will update this guide with improved tool and methods and scenarios, like Azure AD joined and MDM managed environments, As we continue to invest in password-less, we would love to hear from you. Your feedback is important. Send us an email at pwdless@microsoft.com.