Anonymous (the hacker group) uploaded 90,000 military email address and associated password hashes onto the bittorrent network on Monday .
The sensitive,leaked, data came from a hack against military contractor Booz Allen Hamilton, which Anonymous hinted had yielded further sensitive information. The loosely knit hacktivist collective claims to have pulled the information from an unprotected server.
Security watchers warn, email addresses and other data obtained(but not released) might be used to mount other attacks,
“Anonymous claims to have erased four gigabytes worth of source code and to have discovered information which could help them attack US government and other contractors’ systems,” Chester Wisniewski of net security firm Sophos notes in a blog post on the hack.
Booz Allen Hamilton declined to comment on the incident.