Worth Reading: Tracing down flashing dialogs In a recent update to their Office suite on Windows, Microsoft made a mistake where every hour, for a fraction of a second, a black window pops up on the screen. This leads many to fear their system has been infected by a virus. I thought I’d document how to track this down. —Errata Security Related ← Worth Reading: Fast changes, illustratedWorth Reading: Processing Logs in Real Time with Naiad →