Here’s where I keep notes or quick links to Microsoft Security Bulletins…
Security Bulletins
https://technet.microsoft.com/library/dn631937
“The Microsoft Security Response Center releases security bulletins on a monthly basis addressing security vulnerabilities in Microsoft software, describing their remediation, and providing links to the applicable updates for affected software. Each security bulletin is accompanied by one or more unique Knowledge Base Articles to provide further information about the updates.”
Security Bulletin Summaries
https://technet.microsoft.com/en-us/library/security/dn631938.aspx
“Security bulletin summaries provide a high-level overview of the security bulletins that are released by the Microsoft Security Response Center each month. The summaries provide information to help customers prioritize monthly security updates.”
Microsoft Security Response Center (MSRC) Blog
http://blogs.technet.com/b/msrc/