In case you’re wondering how diabolical DNSChanger is, the malware is actually a family of Trojan programs that hijack search queries while displaying malicious ads and redirecting users to fake websites. They do this by forcing infected computers to use DNS servers controlled by the attackers.
The malware was first discovered in 2007. But by then, it had already infected millions of computers worldwide. Last year, the group operating DNSChanger were arrested by an international group of law enforcement agencies. However, many computers impacted by the malware remain infected and are currently using interim systems to access the internet.
“As a result of the arrests, all computers still infected with DNSChanger malware will no longer be able to access websites, email, chat, or social networking sites like Facebook, after July 9, 2012 when these temporary systems will be disabled,” Facebook said. If you want to find out if your computer or network is infected with the malware, you check by visiting DCWG.