The CBI on Thursday said that it has registered a case against several companies for transmitting pop-ups to the victims' personal computers with warnings or bogus messages about serious technical problems including malware infections, as it carried out searches at 10 locations in several states.

A CBI spokesperson said that the agency registered a case against Softwill Infotech Pvt Ltd, Innovana Thinklabs Ltd, Jaipur, Benovellient Technologies Pvt Ltd, Noida, Systweak Software Pvt Ltd, Jaipur, Saburi TLC Worldwide Services Pvt Ltd, Saburi Global Services Pvt Ltd, Gurugram and unknown others on a complaint.