Tech Q&A: How dangerous is ransomware? Damages are growing

Q: As a businessperson, I’d like to better understand CryptoWall, the malicious program you wrote about (tinyurl.com/z43tzdw) that encrypts files on a PC and holds them for ransom. Is it what computer security firms call an “advanced persistent threat”? After it’s downloaded, is it installed on a single PC or can it move from one […]