Internet service provider (ISP) Virgin Media is working with the Serious Organised Crime Agency (Soca) to combat internet fraud.
The firm, which last year announced plans for a proactive approach to helping customers remove serious computer infections, is currently warning customers about the SpyEye Trojan.
Soca identified 1,500 Virgin Media customers at risk from the threat, and through its Malware Defence Campaign, the ISP was able to warn its broadband customers of the dangers they face.
Virgin Media said it was "the only ISP taking a proactive stance in this area".
"Despite already providing class-leading anti-virus software, it is apparent that many consumers do not keep their protection software up to date, leaving them at risk," the broadband provider stated.
"Our malware campaign is designed to give our customers the confidence to enjoy getting online with the reassurance that Virgin Media is there to support them when things go wrong."
Virgin Media recently revealed that its ultra-fast 100Mb broadband network has passed four million homes in the UK.