Anonymous: We've taken down 800 ISIS Twitter accounts

The hacking group Anonymous is working to shut down Twitter and Facebook accounts that are associated with the terrorist organization ISIS.

Anonymous appears to be delivering on its promise to take down terrorist group ISIS on the Internet.

The hacking group listed nearly 800 Twitter accounts, 12 Facebook pages and over 50 email addresses that it said were attacked because of their suspected ties to ISIS.

Anonymous declared war against Islamic extremists last month, saying in a YouTube video that they would track down their websites and social media networks and take them down.

In a new video posted Friday, Anonymous sent another warning toISIS: "You will be treated like a virus, and we are the cure. We own the Internet."

Checks found the vast majority of Twitter (TWTR, Tech30) and Facebook (FB,Tech30) accounts mentioned by Anonymous were displaying a message saying they had been suspended or were not available. However, a few accounts still seemed to be running.

Both Twitter and Facebook are known to take down accounts and content that are associated with terrorism, but it can be difficult to keep track of their millions of users. They often rely on complaints from others before making a move.