Uploaded February 2026 | Updated September 2026, 1 week ago
What began as a 14 year old fixing infected computers became Malwarebytes, an 800 person cybersecurity company trusted by millions of customers.
On Grit, Marcin Kleczynski joins Joubin Mirzadegan to explore AI driven cyber threats, strategic reinvention, and the discipline of evolving before the market forces you to.
“We’ve exceeded. Now, what do we do to protect individuals against the next wave of threats, which are plentiful?”
Guest: Marcin Kleczynski, CEO at Malwarebytes
Connect with Marcin Kleczynski
X: https://x.com/mkleczynski
LinkedIn: linkedin.com/in/marcinkleczynski
Connect with Joubin
X: https://x.com/Joubinmir
LinkedIn: linkedin.com/in/joubin-mirzadegan-66186854
Email: grit@kleinerperkins.com
Follow on LinkedIn:
linkedin.com/company/kpgrit
Follow on X:
https://x.com/KPGrit
Learn more about Kleiner Perkins: kleinerperkins.com
00:00 Trailer
00:37 Introduction
02:18 Post-COVID Work Culture: Hybrid Schedules, Productivity, and ‘Genie in the Bottle’
07:58 Origin Story: Building Malwarebytes
32:10 References That Actually Work: The ‘First 90 Days’ Question
36:06 AI Hype vs. Real Value: Coding Models, Security Risks, and the Coming Shakeout
49:48 Founder Life & Culture: Work Rhythms, Long-Tenure Teams, and Defining ‘Fun'
What began as a 14 year old fixing infected computers became Malwarebytes, an 800 person cybersecurity company trusted by millions of customers.
On Grit, Marcin Kleczynski joins Joubin Mirzadegan to explore AI driven cyber threats, strategic reinvention, and the discipline of evolving before the market forces you to.
“We’ve exceeded. Now, what do we do to protect individuals against the next wave of threats, which are plentiful?”
Guest: Marcin Kleczynski, CEO at Malwarebytes
Connect with Marcin Kleczynski
X: https://x.com/mkleczynski
LinkedIn: linkedin.com/in/marcinkleczynski
Connect with Joubin
X: https://x.com/Joubinmir
LinkedIn: linkedin.com/in/joubin-mirzadegan-66186854
Email: grit@kleinerperkins.com
Follow on LinkedIn:
linkedin.com/company/kpgrit
Follow on X:
https://x.com/KPGrit
Learn more about Kleiner Perkins: kleinerperkins.com
00:00 Trailer
00:37 Introduction
02:18 Post-COVID Work Culture: Hybrid Schedules, Productivity, and ‘Genie in the Bottle’
07:58 Origin Story: Building Malwarebytes
32:10 References That Actually Work: The ‘First 90 Days’ Question
36:06 AI Hype vs. Real Value: Coding Models, Security Risks, and the Coming Shakeout
49:48 Founder Life & Culture: Work Rhythms, Long-Tenure Teams, and Defining ‘Fun'
