Rogue:JS/FakeCall.A is a detection for webpages that show a message that claims your PC is infected with malware. The page recommends you phone a number to get technical support to help remove the malware.
These webpages have no ability to find malware and their claims are fabricated.
Below is an example of a webpage used by this threat.
When the page is first loaded the following dialog box is shown:
This is followed by the webpage:
Analysis by Hamish O'Dea
The following could indicate that you have this threat on your PC:
- You see this dialog box:
- You are directed to a webpage similar to this: