A Letter from Marcin Kleczynski, our CEO

malwarebytes logo

Imagine a world without malware. We do.


Hi, Marcin Kleczynski here, founder and CEO of Malwarebytes. Thanks for using the free version of Malwarebytes.

We work hard to make the best cybersecurity products on the market, and we’re proud that you’ve trusted us to keep you and your devices safe from hackers.

I created Malwarebytes in 2004 after I accidentally infected my family computer with malware. I needed a program that could get rid of the infection, so with the help of some friends, I built one myself. It turned out I wasn’t the only one infected with malware, so I started giving away my program for free.

More than ten years later, the basic version of Malwarebytes is still free. With this in mind, you may be wondering why you should bother upgrading to Premium. It’s pretty simple. While the free version gets rid of infections, the premium version stops them before they happen.

We hope you’ll consider upgrading to Malwarebytes Premium. It doesn’t just protect your devices. It protects your family photos, your privacy, and your money. We try hard to keep subscriptions affordable, and every purchase comes with a 60-day money back guarantee. Your subscription also helps us improve the product and give back to the community by sponsoring programs for young people who want to learn about computer science. It’s all part of our commitment to give everyone a chance at a malware-free existence.

Thank you,


-Marcin Kleczynski, Founder and CEO of Malwarebytes

Learn more about Malwarebytes Premium and sign up risk free.