Comprehensive guide to digital security: Motherboard tells how to guard against hackers and surveillance. Digital basics for privacy and messaging.

“As a consumer, you can’t control the bugs that your carrier leave open for hackers. But you can make it a bit harder for hackers to impersonate you with gullible tech support employees. The solution is easy, although not that many people know about it: A secondary password or passcode that you need to provide when you call your cellphone provider.”