Why You Can’t “Securely Delete” a File, and What to Do Instead

Some utilities have a “secure delete” option that promises to securely erase a file from your hard drive, removing all traces of it. Older versions of Mac OS X have a “Secure Empty Trash” option that tries to do something similar. Apple removed this feature recently because it just doesn’t work reliably on modern drives.

How to Enable Wi-Fi Calling on an Android Phone

Wi-Fi calling allows your smartphone to place and receive phone calls, as well as send and receive SMS messages over Wi-Fi instead of the cellular network. Your phone will seamlessly hand off to the cellular network when you move out of Wi-FI range.

How to Stop Your Smart TV From Spying on You

There’s a good chance your smart TV is spying on you. Smart TVs often analyze the videos you’re watching and report back — whether you’re watching live TV, streaming videos on a service like Netflix, or playing local video files. Worse yet, this can be a security problem.