CryptoPrevent – tool to prevent CryptoLocker

UPDATED 3/15/2015

Doug’s link no longer works. Please go to to download. If you want the free version you need to scroll all the way down to the bottom. Note the free version does not automatically download definition updates.


Recently our colleague, Doug Grabowski, contributed a post about the nasty CryptoLocker virus. Now he has some new information that can help you prevent the harm that CryptoLocker can cause.

Doug writes “There is a free, trustworthy tool available to prevent CryptoLocker from infecting your computer. I’m not affiliated with them in any way, but am using the tool for my own use. Please share with all of your users and run on all Windows machines (Mac not currently affected).

Run it, and you will be prompted with a splash screen.











Select all four checkboxes








Click Apply. When prompted ‘Are you sure you want to block temp extracted files’, accept it. These options are the most pessimistic settings, and ones I recommend.”

When done you will be prompted to restart, which you should do as soon as you can.

Remember to  please be careful about what you dowload and work with your technology team.

Douglas R. Grabowski, Jr. is Managing Partner of Grabowski Group, Inc., a strategic technology advisory firm, with offices in Connecticut, NYC, and Florida, that develops and delivers services to improve the way businesses use technology to achieve strategic, operational, and financial goals. He can be reached at

Comments are closed.