AntiSec hackers have attacked the site of a company that sells equipment to US law enforcers such as the police.
A message posted over New York Ironwork’s homepage said it was a “tribute to Jeremy Hammond”.
Jeremy Hammond has been accused of being involved in an attack on the think tank Stratfor last year and was arrested in Chicago on Monday.
This marks the second breach explicitly linked to the FBI’s swoop.
FBI also charged five other men with computer crimes, including LulzSec’s “leader” Hector Xavier Monsegur – known as Sabu – who helped officers with the crackdown after pleading guilty to 12 criminal acts.
Earlier this week, AntiSec attacked the website of the Spanish firm Panda Security, accusing it of helping police arrest other members of Anonymous, the name given to the wider hacktivist campaign. Panda Security denied the allegation.
AntiSec hackers have attacked the site of New York Ironwork that sells equipment to US law enforcers such as the police
AntiSec signaled that they intended to continue their campaign.
“We’ll fight till the end,” their message said.
“To the FBI… you have our logs, we have all those PMs [private messages] and private chats u don’t want to make public. AntiSec is still alive and well. We refuse to let some… snitch divert us from our path in life.”
New York Ironworks sells gun lasers, pepper spray holders and tactical clothing.
Its Facebook page says it “has spent well over a decade earning the respect of police officers in and around New York”.
A New York Ironworks’ spokesman said that he had no comment on the matter.
The Cyber War News blog also revealed that AntiSec had leaked the source code from Symantec’s 2006 version of its Norton anti-virus software.
An accompanying statement made reference to the recent arrests.
Symantec had said that it expected the move, having previously confirmed the theft. It said customers who had more recent versions of the software were not at risk.
Joss Wright, a research fellow at the Oxford Internet Institute, said it was not yet clear what the long-term consequences of the LulzSec and AntiSec crackdown would be.
“The FBI has achieved symbolic victory, but the Anonymous group in its widest sense includes a lot of people, most of who remain unknown,” Joss Wright said.
“We can see that they are threatening more attacks on Fridays and the movement is likely to carry on. But the question is whether any potential leaders – those who help achieve the big hits by dedicating a lot of time and skill – have been scared away.”
A group of hackers identifying themselves as AntiSec has attacked the website of Panda Labs’ anti-malware products.
The internet attack comes after yesterday’s arrest of an alleged member of the movement alongside others linked to the LulzSec hacking collective.
Panda Labs’ front page was replaced with a message saying: “Love to LulzSec/AntiSec fallen friends”.
AntiSec accused Panda Labs of having helped police arrest other hackers last month. The company denies the claim.
The group LulzSec and hackers involved with “Operation AntiSec” all identify themselves under the wider Anonymous heading.
Panda Lab’s Spanish parent company, Panda Security, said it was investigating the intrusion but said it could assure its customers that none of their information had been compromised.
The company added that an external server hosting some of Panda Labs’ content had been targeted. Visitors to the site no longer see the hackers’ posting.
AntiSec has attacked the website of Panda Labs' anti-malware products
The hackers’ message had claimed that: “Pandasecurity.com… has earned money working with law enforcement to lurk and snitch on Anonymous activists. They helped to jail 25 Anonymous in different countries and they were actively participating in our IRC channels trying to dox [obtain personal information about] many others.”
The attackers went on to claim that the firm’s services had been used to target activists campaigning against “injustices” who had not been involved in hacking.
However, Panda Security’s technical director, Luis Corrons, said that the firm had not been involved in February’s arrests in Spain, Argentina, Chile and Colombia.
“If I could have had the opportunity I would love to have collaborated with the law enforcement officers to arrest those people – but we didn’t in this case,” he said.
“We do not have a problem with activism. I find that it is not a bad thing – it may be good and healthy for a society. My main problem with Anonymous people is the way they act.
“If you are doing illegal things like stealing information that’s something that is a crime and we are always willing to help law enforcement stop cybercrime.”
Luis Corrons said he believed his firm had been attacked because of a blog he wrote yesterday in which he described the latest arrests as “good news”.
His comments were quoted in the message posted to his firm’s site which added: “Lol he asked for the Lulz!!!”
Officials have said that Tuesday’s action marked the first time core members of Anonymous had been identified and charged in the US.
The FBI said a total of six men had been charged – including two in the UK and two in the Republic of Ireland.
British police also charged one of the men and a further unidentified 17-year-old from South London with hacking-related crimes – but said that their decision to launch court proceedings was “completely unrelated” to the actions taken in the US.
The arrests and accusations followed the suspected leader of LulzSec’s decision to co-operate with the authorities last year.
Court papers unsealed on Tuesday revealed that Hector Xavier Monsegur – known as Sabu – had pleaded guilty to 12 criminal charges in August. The FBI said he faced a maximum sentence of more than 124 years in prison.
The papers said Hector Xavier Monsegur had been involved in attacks against Visa, Paypal and government computers in Tunisia, Algeria and Yemen among others. He is currently free after being released on a $50,000 bond.
The Panda Labs’ attackers commented on Hector Xavier Monsegur’s action saying: “It’s sad and we can’t imagine how it feels to look at the mirror each morning and see the guy who shopped their friends to police.”
The court papers also revealed how the hackers are suspected of being able to access and disclose a private conversation between the FBI and Scotland Yard recorded in January.
One of the accused, Donncha O’Cearrbhail, is said to have found out how to access the call by breaking into the personal email account of an officer with Ireland’s national police force.