Security & Malware Problems

Pop-ups, redirects, fake warnings and other signs something's not right — what they usually mean and what to do about it.

Not every odd thing a computer does is malware, but pop-ups that won't stop, a browser that's started redirecting, or programs you don't remember installing are all worth taking seriously rather than dismissing. The guides below walk through the most common signs of a genuine problem, what tends to cause them, and what's worth doing immediately versus what can wait for a proper clean-up. If you're after the removal service itself rather than working out what's going on first, that's covered separately under Virus & Malware Removal.