Do CCleaner Pro Users Need Unhackme? in Windows Security Posted 17 hours ago CCleaner is a system performance and privacy tool. Although it can be of assistance in cleaning up malicious files and lingering vulnerabilities under certain circumstances, it is not an antivirus product. That said, if someone is after an antivirus/antimalware product I would generally recommend picking something with an established user base and reputation. Generally speaking, any AV software with a global install base lower than 50M at a bare minimum is unlikely to have enough of a threat detection network to be able to adequately protect you. The software you mention does not seem to fall into that category.