The hacker cell of the Anonymous collective has re-targeted the US Federal Bureau of Investigation (FBI) attacking and defacing an affiliated website called InfraGard.

" #FFF [LAST HACK] FBI-INFRAGARD ROOTED AGAIN. ONE MORE TIME. FOR THE LULZ. #Anonymous #AntiSec #LulzSec #OWS" announced with a tweet Anonymous IRC.

A statement on the defaced homepage reads: "Today we targeted the Dayton Ohio chapter of InfraGard, the sinister alliance between law enforcement, corporations, and white hat wannabees."

"We broke into their webserver, perused their assorted presentation materials, and finally deleted everything and vandalized their website so we can boost our zone-h rankings," the statement continues.

The website defines its role as: "InfraGard is an association of businesses, academic institutions, state and local law enforcement agencies, and other participants dedicated to sharing information and intelligence to prevent hostile acts against the United States." The site has over 42,026 members.

The recent attack is part of Anonymous' ongoing F**k FBI Friday campaign, which began in 2011, has seen the collective mount an ongoing series of attack on the law enforcement agency.

The attack on InfraGard is the latest in a long line of hostilities between Anonymous members and the law enforcement agency. In February, the collective released a recording of an FBI internal conference call.

In January, the collective targeted the FBI with what it described as its largest distributed denial of service (DDoS) attack ever.

The FBI DDoS was part of a wider campaign designed to protest the US government ordered shutdown of media-sharing site