NOTE: For those of you who use MB 3.0 (Malwarebytes 3.0), Malwarebytes has upped their aggressiveness on PUP's and PUM's. (Potnetially Unwanted Programs - PUP and Potentially Unwanted modifications - PUM) Which goes directly to the Ccleaner installer version, slim or full. What this means is, with their new attack policy, any software that has additional software that is being slipped into the install with out the users knowledge or lack there of, will be flagged as a "malicious" software and not allowed to be installed. Point in case; Auslogics disk defragger.
So Ccleaner could be at risk if Piriform is adding in software into the installer, other than Ccleaner itself, from Malwarebytes 3.0.