Cybersecurity experts have uncovered a scheme where attackers disguise malware as CleanMyMac to steal users' data. Fake CleanMyMac apps are attempting to steal passwords and data, with warnings issued by the company behind the app. Malicious ads targeting macOS users are spreading dangerous malware like Atomic Stealer, capable of stealing passwords and cryptocurrency. Users are advised to be cautious of fake CleanMyMac installers that infect Macs with malware hidden in ads and links.