Founders and CEOs on Reddit

Marcin Kleczynski

Founder and CEO of Malwarebytes

Company Malwarebytes ↗

u/mkleczynski ↗Personal account

We retrieved 1 post and 16 comments from u/mkleczynski, dated 2012 to 2021, most often in r/IAmA, r/technology and r/sysadmin.

Best moment

A redditor wrote in r/IAmA

On “IAm Marcin Kleczynski, founder and CEO of Malwarebytes. AMA.”

Am I the only person who's annoyed by the way, when you manually update Malwarebytes definitions, and then accidentally highlight another window while it's downloading (, that you can't just tab back to the update window when it finishes because it hasn't created anything in the…

u/mkleczynski replied

Nope, I just tried it and I'm annoyed. Off the to development queue it goes.

Fixed itFixing it in the threadr/IAmA · 927 points as of Nov 2026Full thread ↗

More moments

A redditor wrote in r/IAmA

On “IAm Marcin Kleczynski, founder and CEO of Malwarebytes. AMA.”

Just wanted to say thank you. Spent three years working in a local computer shop and about every computer was fixed thanks to malwarebytes.

u/mkleczynski replied

You're welcome! I worked at a computer shop where we reformatted every. Single. Machine. I couldn't take it anymore.

Early daysHow it startedr/IAmA · 373 points as of Nov 2026Full thread ↗
A redditor posted in r/technology

Malwarebytes is now blocking compromised IP ranges from imgur.

EDIT 2: The issue has been resolved according to official sources!https://www.reddit.com/r/technology/comments/3m1tq7/malwarebytes_is_now_blocking_compromised_ip/cvbpjb7 http://s4.postimg.org/j7zv7dwwr/malware.png This is a result of…

u/mkleczynski replied

Marcin from Malwarebytes here! I'm looking into it personally.

Fixed itFixing it in the threadr/technology · 621 points as of Nov 2026Full thread ↗