A: Update it every time before you use it. Ideally, plug your USB in once a week and manually check for updates.
For home users: Keep a copy on a USB stick labeled "Emergency Cleaner." When your mother-in-law calls saying "My computer is acting weird," you can drive over, plug in your USB, and run a scan without waiting 20 minutes for a download to finish on her slow, infected internet. Malwarebytes Anti-malware Portable
A: No. The portable executable (.exe) is designed exclusively for Windows. Mac users need the standard Malwarebytes for Mac installation. A: Update it every time before you use it
A: Stop immediately. The real version never requires a setup installer to run. Delete the file and scan your own PC for downloading it. Disclaimer: Malwarebytes is a registered trademark of Malwarebytes Inc. This article is for educational purposes. Always download software from official sources to avoid infection. A: Stop immediately