Screen output from the freely available Hashcat password-cracking application. Hackers use it to convert cryptographic hashes siphoned from compromised websites into plaintext passwords.
Dan Goodin
Password crackers have hacked more than 11,000 accounts belonging to players of the popular game Guild Wars 2, in part by using credentials siphoned from an unknown fan site that was recently compromised, game officials said.
Officials with Guild Wars 2 developer ArenaNet recently began the practice of proactively e-mailing customers when someone logs into an account from a new location. They're also advising users to choose long, random passwords that are unique to their accounts and to check e-mail only from trusted devices. From Friday to Sunday, officials said they received about 8,500 support requests related to hacked accounts and another 2,574 requests by Monday.
"If you don't want your account hacked, don't use the same email address and password for Guild Wars 2 that you've used for another game or web site," officials wrote over the weekend. "Hackers have big lists of email addresses and passwords that they've harvested from malware and from security vulnerabilities in other games and web sites, and they're systematically testing Guild Wars 2 looking for matching accounts."
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