The main Web site of the Treasury division that prints U.S. paper currency, the Bureau of Engraving and Printing, remained down as of Wednesday morning, presenting would-be visitors with a 404 "not found" error at each of the four URLs that point to the page, bep.gov, bep.treas.gov, moneyfactory.gov, and moneyfactory.com.
The hack was first noticed Monday by anti-malware company AVG, whose chief research officer Roger Thompson said in a blog that the hack was an indication that "anyone can get hacked."
Cisco's ScanSafe tracked the attack to a Web site that attempts to exploit numerous vulnerabilities in Adobe Reader, Adobe Acrobat, Internet Explorer, Microsoft Office, Symantec AppStream, and other applications, and said that the malicious site has targeted sites hosted by Network Solutions and GoDaddy.
The Department of Treasury did not identify the provider that hosted the Bureau of Engraving and Printing Web site, but did acknowledge in a statement that it "entered the cloud computing arena last year."
The attack is bound to raise concerns about federal agencies' abilities to secure data hosted by third-party service providers. Security remains one of the biggest concerns in government circles as the Obama administration makes an aggressive push for federal agencies to begin adopting cloud computing services. The attack may also be used as a tool by legislators and policy makers to demand tighter security requirements.
It's unclear when the bureau's Web site will go back online, but the agency said that it is "aware of the remediation steps required to restore the site and is currently working toward resolution."