: Hackers commonly embed malicious code in modified software. A notable real-world example occurred in 2017 when the official CCleaner 5.33 release was itself compromised with the Floxif trojan, showing how even legitimate versions are targets for attackers. Unofficial patchers from "warez" sites are far more likely to contain similar backdoors.
: Patchers often modify core system files or the Windows registry. Incorrect modifications can cause programs to malfunction, slow down the system, or lead to crashes.
Instead of risking your system with a potentially dangerous .zip file, you can download the official directly from CCleaner's website . The free version includes essential optimization tools such as: YouTube·Chris Titus Tech Do NOT use Registry Cleaners
: Malicious files can be programmed to steal sensitive information such as website passwords, credit card details, IP addresses, and lists of your active software.