This is the most immediate danger. Cybercriminals know that users searching for "cracks" are desperate and likely have lowered defenses. They package trojans, ransomware, and spyware inside the keygen software or the modified installer.
The most common result for this search is a website claiming to have a "PC Cleaner Key Generator 2025." These sites ask you to complete a survey, download a "keygen" (key generator), or enter your email.
The reality:
If you want a dedicated cleaner without paying or cracking, these are industry standards:
1. BleachBit (Open Source)
2. Wise Disk Cleaner (Free version)
3. Privazer (Free edition)
4. Microsoft PC Manager (Official Microsoft tool)