One of the great, unappreciated inventions in security came from Microsoft almost 10 years ago in October, 2003: Patch Tuesday. Microsoft invented the process of regularly scheduled security updates. It was somewhat controversial at the time, but it was clearly the right thing to do and has eliminated what was becoming a regular series of crises, thus relieving a great deal of pressure from security admins.
Read more at: The triumph of Patch Tuesday | ZDNet