MJ Registry Watcher

by admin June 26, 2009 at 3:20 pm

MJ Registry Watcher is a simple system tray program that monitors for changes to any of the startup folders, startup registry keys, and any files you want alerting on.

If a trojan attempts to change your startup settings, you will be alerted, and you can prevent any changes being made. It is fully configurable as to what keys and files are monitored, so, if you have a vested interest in protecting your file association for the mailto protocol (your default emailer), so that your preferred app loads them, and something else is trying very hard to undermine this association (Outlook for example), this will popup, offering to stop a new association attempt, after Outlook had loaded, say. The key that stores this association is hkey_lmus\software\classes\mailto\shell\open\command, and you could protect other associations by changing “mailto” to the desired type, for example, “jpegfile”.

It assumes write access and directory create rights for the path the .exe file sits in (ie. wherever you installed it). The default set of keys and files should ensure that nothing gets run at startup without you knowing about it, and important boot up files don’t get changed behind your back. When monitoring, keys are opened in Read-Only mode, and the application only needs Write Registry access when it has detected a change. It keeps a log of any suspect activity, and displays any such information for the current session in the bottom panel. A log file has this appended to it and can be viewed by pressing the Log button. The file keeps a complete history of alerts.

Download: MJ Registry Watcher


  1. This is an excellent product and it is surprising that it is free of charge. It has saved my PC a couple of times now. It uses next to no resources. I highly recommend this as a very strong safeguard for the PC. It is also fully configurable so you can tailor it to your particular set up. 10/10!

  2. What a great little app. Once you have commented out the IE cookies key so that it doesn’t alert you any more, this app silently protects my PC and makes me feel reassured and safe, wherever I browse. Highly recommended and costs nothing!

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