STEP 1: Is Superfish Installed?

The idea behind Superfish is to present online shoppers searching for an item with lower-priced buying options for the same item. Sounds pretty useful. The tool is implemented as an extension to Chrome and Internet Explorer, and works by performing a visual search using the original item's image and displaying buying alternatives like the one shown here. Sounds harmless enough. But to perform this magic, the app takes some liberties with user security that leave the system vulnerable. If the system in question shows a screen like this, chances are it's infected. For a more definitive answer, move on to Step 2.