Lewis said he's been covering the cameras on his own computers with Post-it notes since the early 2000s. "The easiest way to remove that lingering doubt is to just slap some tape over it. Problem ...

I wrote about Micro Snitch ($4) in my column on microphones, and it alerts you when built-in and some third-party video cameras activate as well. The OverSight menu lets you know what it’s ...