A common issue when deploying Exchange Online Protection (EOP) and Microsoft Defender for Office 365 (MDO) with on-premises Exchange is making Exchang… Read the rest “Configure On-Premises Exchange For EOP Spam Thresholds”
Active Directory Federation Services (AD FS) uses endpoints to provide access to features. There are a series of different endpoints which each serve… Read the rest “Check If AD FS WSTrust Endpoint Enabled”
Note that there have been changes to Safe Links policy for Microsoft Defender for Office 365 (MDO).
Previously you could add URLs to the Safe Links pol… Read the rest “Migrate Safe Links Block Settings to TABL”
Admins have become very aware of the need to adjust the Schannel protocol settings for TLS to enable TLS 1.2 and to disable older versions. However, … Read the rest “Remediate SWEET32 — Disable TLS_RSA_WITH_3DES_EDE_CBC_SHA For Windows Server 2012 R2”
This was a question from a recent customer engagement: Why is the Microsoft Defender portal asking me to turn on the Unified Audit Log when I already… Read the rest “Defender Portal Enable Audit – Is That The Unified Audit Log?”
Below are a series of links to the main Microsoft Defender for Office 365 blog. Shortcuts added here as this is one of my shared bookmarks.
Security updates were released today for Exchange 2010, 2013, 2016 and 2019. Attacks were detected which leveraged these vulnerabilities, so an out o… Read the rest “Out of Band Critical Exchange Security Updates–March 2021”
In most enterprise customers there is a segregation of duties between multiple teams. This could be networking and desktop. Or Windows Server platfo… Read the rest “Exchange Managed Availability Broken With TLS 1.2 Changes”
In the November 2014 security bulletin there were 14 updates released. The updates resolved security issues in IE, OLE and Schannel. It is the latte… Read the rest “Critical Schannel Vulnerability – MS14-066”
Please be aware that there is a pending change for the minimum key length for certificates with RSA keys. The private keys used in these certificat… Read the rest “Important Upcoming Certificate Changes”