From the trenches: Breaches, Stories, Simple Security Solutions - from MacAdmins at PSU
Revoking and Pinning Certificate Authorities in Windows
12 Days of HaXmas: What Home Alone Can Teach About Active Defense
Reduced Annoyances and Increased Security on iOS 9: A Win Win!
Microsoft Attack Surface Analyzer (ASA): It's for defenders too!
Reducing Windows Attack Surface with User Rights Assignment
Are you really protected against Group Policy Bypass and Remote Code Execution? MS15-011 & MS15-014
Top 10 list of iOS Security Configuration GIFs you can send your friends and relatives