Hacking group LulzSec is continuing its campaign to target the world's governments, by claiming to have attacked the Brazillian government's website.
The group used micro-blogging service Twitter to announce its latest move.
"TANGO DOWN brasil.gov.br & presidencia.gov.br," a tweet from the group read.
Another tweet, which was posted a little while later, read: "Our Brazilian unit is making progress. Well done @LulzSecBrazil, brothers!"
The Brazilian Government's official website and Brazillian equivalent of the UK’s Downing Street site, the President's office, were both left inaccessible from attack and at time of writing were still down.
It looks like LulzSec is following through on its plans to attack websites belonging to government’s across the globe. The group has joined forces with Anonymous, another hacking group that last December led attacks against companies that had withdrawn payment and hosting services from WikiLeaks.
"Welcome to Operation Anti-Security (#AntiSec)," a statement from LulzSec said. "We encourage any vessel, large or small, to open fire on any government or agency that crosses their path. We fully endorse the flaunting of the word 'AntiSec' on any government website defacement or physical graffiti art."
LulzSec has claimed responsibility for a large number of recent database breaches and distributed denial-of-service (DDoS) attacks, including against Sony and other gaming companies, the Central Intelligence Agency (CIA) and the US Senate and the Serious Organised Crime Agency (SOCA) website, which was taken down yesterday.
The attack comes just hours after police arrested a 19-year-old for allegedly launching network intrusions and distributed denial-of-service (DDOS) attacks against "a number of international business and intelligence agencies”. It is thought the hacker may be connected to LulzSec