Comment by Mixtape

In no particular order: 404 Media, Ars Technica, BleepingComputer, The Register, The Verge, and Tomshardware.

These usually sit in the corner of my screen through the day. Some are better than others for work purposes. The Verge could probably go, and 404 is a bit more socially-focused than the rest. In particular though, having rapid updates from BleepingComputer and El Reg is a great way for me to learn about new vulns, issues that might affect my users, etc.