Why Antivirus Fails at File Scanning | OPSWAT CEO Benny Czarny on CDR

<p>Antivirus is built to protect the device, not to judge a file. OPSWAT founder and CEO Benny Czarny explains why file scan detection lands somewhere between 5% and 40% even with AI engines, why 99.9% detection isn't good enough for a nuclear plant, and how Content Disarm and Reconstruction (CDR) protects critical infrastructure by assuming every file is malicious and rebuilding it clean.<br /><br />We get into:<br />- How Benny bootstrapped OPSWAT and built a common language that let antivirus, VPN, firewall, and encryption products talk to each other<br />- Testing every antivirus on the market with live malware, and what it showed about real-time protection vs file scanning<br />- Why multiscanning with 30 engines still let malware through<br />- How CDR rebuilds JPEG, PDF, and Office files to strip buffer overflow exploits before they land<br />- Data diodes, one-way optical firewalls, and securing file flow into air-gapped networks<br />- Offline patching, and why critical infrastructure teams need their own training (OPSWAT Academy)<br /><br />Benny's book, Cybersecurity Upside Down, covers the statistics and architecture behind all of this.<br /><br />Find Benny and OPSWAT:<br />OPSWAT: <a href="https://www.opswat.com" rel="noopener noreferrer nofollow">https://www.opswat.com</a><br />Benny Czarny: <a href="https://www.bennyczarny.com" rel="noopener noreferrer nofollow">https://www.bennyczarny.com</a><br />OPSWAT Academy: <a href="https://learn.opswatacademy.com" rel="noopener noreferrer nofollow">https://learn.opswatacademy.com</a><br /><br />Chapters:<br />00:00 Welcome Benny Czarny<br />02:22 How Benny got into cybersecurity<br />04:58 Big company vs small company lessons<br />08:20 First hires and scaling from generalists to experts<br />08:59 The problem that started OPSWAT<br />12:01 Testing every antivirus with live malware<br />13:42 Why antivirus file scanning fails, even with AI<br />17:36 Multiscanning file flow into critical infrastructure<br />19:45 Why 99.9% detection isn't good enough<br />20:09 Assume every file is infected: CDR explained<br />23:52 How CDR strips buffer overflow exploits<br />26:50 Dolly the sheep and distilled water analogies<br />28:16 From 15 file types to hundreds of formats<br />29:51 Data diodes and one-way optical firewalls<br />32:05 What CDR can't rebuild: executables and sandboxing<br />33:48 Walled gardens and unpatched networks<br />35:32 Offline patching and OPSWAT Academy<br />39:12 Where to find Benn