I also concur with the findings of the above members. I find it very concerning that running CCleaner causes the TeamViewer service to start up. TeamViewer is a program that could possibly be used by malware to spy and record everything you are doing on your computer! Just to be on the safe side that this current version of CCleaner is not compromised, I'm going to delete it and reinstall an older version of CCleaner that doesn't share this behavior!