Team System DZ
The hacker group, Team System DZ (based in Algeria), started posting links
to hacked websites on it's Facebook page. By the end of the weekend, it had quite an interesting collection.
The group defaced over 80 websites, while leaving pro-ISIS messages on the front page of the websites along with a personalized logo. Although most of the messages were quickly removed and repaired. They even attacked government websites for Richland County in Wisconsin. Strangely, this is the THIRD time that they have attacked Richland County, which leads to speculation of a common configuration flaw. Most of the sites were running wordpress with a multi-site function, meaning if one was breached all of them were breached.
This time the hackers defaced the websites for Richland County Sheriff’s Department, Fairgrounds, Parks Commission, Land Conservation, Ambulance Service, and the central Richland County government portal.
While the group had previously said it's affiliated with the legendary hacker group Anonymous, the hashtags the group used were #OpUSA, #OpIl, #OpRu, #OpFr, and #OpIr. This action seems to be a direct answer to Anonymous' #OpISIS campaign.
A full list of compromised websites along
with mirrors can be found here. As it looks right now, the hackers
aren't skilled enough to carry out other types of attacks except
defacements, since there was no mention during the first two intrusions of any data leaks on the Dark Web.