You’ve heard the advice for years: Turn on two-factor authentication everywhere it’s offered. It’s long been clear that using only a username and password to secure digital accounts isn’t enough. But layering on an additional authentication “factor”—like a randomly generated ...

Internet-of-things devices have been plagued by security issues and unfixed vulnerabilities for more than a decade, fueling botnets, facilitating government surveillance, and exposing institutional networks and individual users around the world. But many manufacturers have been slow to improve their ...