Malwarebes

While working as a technician in a computer repair shop in high school, Kleczynski developed RogueRemover to eliminate fake antivirus programs.

Working with an expert from a forum community, it took three days to clean the system. This experience taught him that traditional antivirus software of the era was failing to catch new, evolving threats. Inspired, he began writing his own code—initially using a Visual Basic for Dummies book—to create tools that could remove these "rogue" programs. Building the Shield Malwarebes

Malwarebytes Anti-Malware officially launched on January 21, 2008, while Kleczynski was studying computer science at the University of Illinois . A Global Defender While working as a technician in a computer

He connected online with Bruce Harrison , a forum regular who shared his passion. Despite making $600,000 in their first year together, the two reportedly had not yet met in person. Inspired, he began writing his own code—initially using