U.S. Department of Treasury websites three of them have been compromised to spread malware, scmagazineus.com has reported.

Thompson said bep.gov, bep.treas.gov and moneyfactory.gov are affected.

Roger Thompson, chief researcher officer of AVG, said the attackers injected a malicious IFRAME into the sites, causing visitors to unknowingly be redirected to a hacker-owned site in the Ukraine. The attack site, grepad.com, previously has been flagged as suspicious, according to a StopBadware report.

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