In addition, some lead to malicious websites - clicking them risks further adware or malware infections. They conceal underlying web content, thereby significantly diminishing the Internet browsing experience. Advertisements generated by potentially unwanted programs do not originate from users' visited websites. This behavior can lead to serious privacy issues or even identity theft. Some of the data will contain personal details that the developers of PUPs share with third parties, who are likely to misuse it to generate revenue.

The types of collected data often include IP addresses, geo-location, website URLs visited, pages viewed, search queries, and other similar browsing-related information. Potentially unwanted programs are likely to track Internet browsing activity and generate intrusive online advertisements. Therefore, it is categorized as a potentially unwanted program (PUP). On initial inspection, Pro PC Cleaner may seem a regular application, however, this app often infiltrates systems without users’ permission. The Pro PC Cleaner application supposedly provides various computer performance-improving functions - 'Pro PC Cleaner identifies and fixes registry issues, corrupted files, memory problems, startup lags, and system issues.'

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