I was fretting about this, I thought hackers had hijacked a Malwarebytes package. This has affected just about all of my clients, about 10 to 15 PCs around town where I had Malwarebytes installed were hosed by this. Most of them were repaired simply by doing a system restore, but one system - A Server system, was irrecoverably corrupted. It was a Windows 7 x64 machine, had no restore points (The System Restore storage had been set to "0 bytes), and it could not be booted to any mode to run Malwarebytes and restore the files. Although it was mostly Windows 7 systems that were affected, a Windows XP system, another server, was affected, maybe 200 or more system, files, were deleted with no choice to stop the deletions. Since the system was the core of a Network which distributes a database to all of the workstations, this business suffered two whole down days. The system files incuided in the deletions were all of the files relevant to file sharing, In a future update, we will need a "panic button" for this kind of error, to stop it and immediately restore the files. We use Malwarebytes to protect us, and we've trusted you for years with our systems. But this was a major cock-up, When I saw, 200 plus SYSTEM files in the quarantine bin, I knew that no virus I am familiar with could have infected that many system files. The users who use these systems have been trained by me, to not install anything at all. Every file affected seems to have been network-related. Not even Teamviewer was working, which is what I use to fix errors remotely, the system was totally invisible to the networks that hook into it and depend on it. So far, I've had 15 affected systems, was able to repair all of them but one. This foul up was way too expensive, and the only reason why I am not really that angry, is because I have work this week because of this. But I need to know the probability that this will ever happen again? I already have too many false positives as it is, it takes me about an hour to enter all of the files I need to exclude from scanning- Per machine, and my work is networking, I set up multiple workstations 2 to 10 at a time. I always put Malwarebytes into them, I need to know, is it SAFE to continue using Malwarebytes? Because there really is no other Malware program that is effective.