SOCA detected the virus created to steal bank details
The SpyEye trojan virus, which is designed to steal online bank accounts information, has infected over 1,500 PCs of Internet service provider Virgin Media.
The malicious virus infections were detected by the Serious Organised Crime Agency (SOCA), which alerted Virgin Media. SOCA is investigating the matter.
Virgin Media has sent letters to its broadband customers which have instructions on how to remove the virus, which usually affects Microsoft Windows systems, and avoid escalation of security threats.
The SpyEye trojan virus was first detected in 2009.
SOCA cyber chief Lee Miles said he welcomed "steps taken within industry to utilise the information and resources provided by law enforcement and raise awareness of online safety".
A Virgin Media spokesman said the response of its customers about the infection had been "generally positive".
The company's executive director of broadband Jon James said, "Cybercrime is on the rise and the increasing sophistication of malware infections mean that all Internet users could be at risk with devastating effects."