Announcement: Security Notification for CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 in CCleaner Posted October 10, 2017 I didn't mean for post 279 to sound as sarcastic as it does when I re-read it. It as a pitiable attempt at humor. Someday I'll learn . . . Anyway, maybe "1st Question ..." is asking how to calculate hash sums? Great software for calculating hash sums offline is Nirsoft's Hash My Files. Free, no installation, fast. 7-zip can do it in the context menu (does SHA-1 and SHA-256, but not md5 -- but who uses md5 any more these days?) Sigcheck from sysinternals can also do it (command line only). It also does a better job of checking digital signatures than the windows interface.