A virus called Cryptowall managed to bypass the town’s spam filters and anti-virus software. Town manager Todd Selig said an officer opened what appeared to be a legitimate file attachment to an email Thursday night. The town is taking steps to segregate the affected computers, eradicate the virus and reload computers with backup files.Cryptowall and Cryptodefense are copycat viruses similar to Cryptolocker, a brand of malicious software that encrypts a user’s hard drive, effectively putting their data under lock and key.”]
Source: https://boston.cbslocal.com/2014/06/06/virus-infects-police-computer-system-in-durham-nh/