Hackers held San Francisco rail system for ransom over the weekend

Over the weekend, criminals hacked the San Francisco Municipal Transit Agency (MUNI), encrypting it with ransomware and leaving a note on their ticketing system: "You Hacked, ALL Data Encrypted." They went on to explain (in broken English) that the attack wasn't targeted, rather a result from automatic scan, a so-called "spray and pray" attack. The attack caused malfunctions in the automated ticket payment stations, which were showing "Out Of Service" notices for two days. During the outage Muni riders were allowed to use the rail system for free because of the glitch.

The issue has been resolved as of Sunday night. The attackers have a long history of using ransomware to demand payments in order to provide the encryption key using the same Cryptom27 at yandex.com email address. Reportedly, the malware in use was HDDCryptor which targets network shares and locks hard drives, making it a viable threat to both home networks and enterprises.

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