How do you download a file using a service account?
string uri = "https://nvd.nist.gov/download/nvd-rss.xml";
using (WebClient client = new WebClient())
{
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
client.DownloadFile(uri, @"c:\test\nvd-rss.xml");
}