Lizard Squad, the group that hacked Xbox Live and PlayStation Network on the Christmas, with distributed denial of service (DDoS) attacks is now selling those attacking tools. The product, “Lizard Stresser,” as described by hackers, is a stress tester that lets one evaluate the sophistication of a network.

A DDoS attack is one where a massive amount of bogus requests are sent to a server to exhaust its capacity, resulting in crashing the network. It has become a fairly common attacking tool to bring down web servers. The end goal of the attack is to make the network resource unavailable to its intended users.

While the hacker group is advertising the tool as a stress tester to help evaluate one’s network, there is a good chance that someone with not-so-good intentions will be able to bring down other’s networks. It thus makes this tool quite dangerous, and Lizard Squad is charging anywhere from $6 to $500 in Bitcoins for attacks. The most expensive tier offers 30,000 seconds of attack (a little more than 20 days), and costs just $130 per month. For $500, customers can launch unlimited attacks.

“Welcome to LizardStresser, brought to you by Lizard Squad,” reads the tool’s introduction page. “This booter is famous for taking down some of the world’s largest gaming networks such as Xbox Live, PlayStation Network, Jagex, BattleNet, League of Legends, and many more! With this stresser, you wield the power to launch some of the world’s largest denial of service attacks.”

We won’t advise you to try the application as it is likely to land you in legal troubles. Lizard Squad itself is pushing all liabilities on you in its Terms and Conditions. According to which, your identity won’t be masked while using the service.

Lizard Squad made the headlines last week when it brought down the PlayStation Network and Xbox Live. The group only stopped attacking when New Zealand-based entrepreneur Kim Dotcom offered thousands of free Mega accounts.

In a statement to Daily Dot, the group said it was all “a huge marketing scheme” to lure people to buy its service. “Playing games on a Twitter is fun, but it comes down to the money. The objective here, for me at least — can’t speak for others — is money.”