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On July 9, 2012, the FBI shut down Internet
servers that had previously allowed millions of Internet
users, who were infected by the DNSChanger Trojan,
access to the Internet. Internet users who were affected
by the Trojan lost access to websites, email, chat,
and social networking sites.
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If you are unable to access the Internet due to this threat, here
is how you can access the DNSChanger Stinger tool and resolve the issue:
The stinger tool will create the registry backup
"TCIP_Registry_Backup.reg". You can restore network
settings with this file. Then restart your computer.
- Click on this link to download the DNSChanger Stinger tool:
Click "Open" then Click "Allow"
- Follow the instructions in the "Readme.txt" file to run the tool or you can
also follow the instructions below:
Double click "stinger.exe"
Click "Scan now"
- If the tool does not detect any malicious DNS server settings or
malware then no further action is required. However, if you are unable to still
access the Internet then you'll want to contact your Internet service provider.
- If the tool does detect that your computer is using a malicious DNS
server, the stinger tool will fix the DNS setting.
Additional information about DNS servers and the
Internet servers are also known as Domain Name
System (DNS) servers. DNSChanger Trojan is a nasty piece
of malware that has been around for some time.
What is a Domain Name System (or DNS)?
Domain Name System, also known as DNS, changes
user-friendly website names into the Internet protocol
(IP) addresses that computers use to talk to each other.
When computer users enter a website name (ex.
www.name.com) into their web browsers, their computer
will contact a DNS server.
What is the 'DNSChanger' Trojan?
'DNSChanger' is a trojan created by cybercriminals to
redirect the Internet traffic of millions of
unsuspecting consumers to websites where the thieves
have profited from advertisements. If your DNS server
has been infected by this virus, you will not be able to
go anywhere online. 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 9th.
For more information, find the McAfee press release here
http://mcaf.ee/7vbuf and the McAfee blog post here