CloudFlare and OpenDNS have partnered to protect internet users from DNSChanger malware who use DNS server for Internet access.

Both the companies said more than a half-million Internet users still connected to the DNS servers which was used by the malware to spread malware.

OpenDNS is a DNS + security company and offers Internet security,DNS service to Internet users.

CloudFlare is a web performance and security company and it protects, accelerates the websites of Fortune 500 companies, international governments, blogs and small businesses.

The two companies first notify Internet users still connecting to the DNSChanger DNS server, and then guide them to switch to OpenDNS, which will ensure reliable and uninterrupted Internet access.

The process will involve two steps, starting with CloudFlare customers enabling the DNSChanger Detector app, which will identify and notify visitors of a site if they are infected with the DNSChanger Malware.

Once notified, infected users will be directed to OpenDNS, which will share detailed instructions for switching DNS to OpenDNS’s trusted servers.

Late last year the crime ring responsible for the famed DNSChanger malware was taken down, and the operation of the DNS server it used to spread malware was taken over by DNS Changer Working Group (DCWG).

DNSChanger automatically and involuntarily converts the DNS settings of infected computers, then using that control to redirect valid URLs to malicious sites.

The DCWG recently announced it will cease operation of the DNS server permanently on 9 July, 2012 which could affect many users.