I had been a ccleaner user for many years, I recently updated and trusted the integrity of piriform, to my surprise, they installed WITHOUT EXPLICIT CONSENT a few malware into my PC, TROVI and SAFE SEARCH, they are blacklisted software that changes your search engine and fakes your browser to make you believe your pc is at risk. Removing them is not as simple as uninstalling them. SHAME ON YOU. Piriform failed me, I trusted you, and no more. Do not upgrade, do not install CCleaner. It is becoming another facebook that violates your trust!!!