Abusing Replication: Stealing AD FS Secrets Over the Network

Organizations are increasingly adopting cloud-based services such as Microsoft 365 to host applications and data. Sophisticated threat actors are catching on and Mandiant has observed an increased focus on long-term persistent access to Microsoft 365 as one of their primary objectives. The focus ...

Advice for incident responders on recovery from systemic identity compromises

As Microsoft alongside our industry partners and the security community continues to investigate the extent of the Solorigate attack, our goal is to provide the latest threat intelligence including IOCs and guidance across our products and solutions to help the community fight back against, harde...

Change Token Signing Certificate Expiration Date

When using ADFS 3.0, the Token-Signing Certificate that is generated during setup is, and can be, a Self-Signed Certificate. By default, the Token-Signing Certificate will expire 1 year after it is created. It will also automatically roll-over 2 weeks before expiration if Certification roll-over ...