"Free" game cheats, cracked software, and crypto trading bots on YouTube often hide malware. Here's how these lures work, the red flags to watch for, what to do if you already clicked, and how I cut off nearly 800 of them this week.

Malware is the engine behind most modern cybercrime, from ransomware to spyware to botnets. Here's what it is, how it evolved from a 1971 experiment, where it's headed, and how to protect your devices and your business.