Endpoint: Security Validation and Authentication Failures
Counter name: Security Validation and Authentication Failures
This counter is incremented whenever a message is rejected due to a security problem not covered by the "Security Calls Not Authorized" counter. Such problems include:
Client token cannot be read from the message.
Client token has failed authentication (bad password).
Signature verification has failed (the message has been tampered).
The message is a duplicate from a previous one, which can happen during a replay attack.
A decryption failure has occurred.
Some required elements (missing timestamp or encrypted data block) are missing from the message.
Errors have occurred during TLSNEGO/SPNEGO handshake.