Is it safe to use Cccleaner?

Could you elaborate on the safety concerns surrounding the use of CCleaner? Are there any recent reports of security breaches or vulnerabilities that users should be aware of? What measures can one take to ensure the safety of their personal information when using this software? Is there a way to verify the authenticity of the download source to prevent malware infections? Lastly, are there any alternative cleaning tools that you would recommend for maintaining privacy and security while optimizing system performance?