Into the Breach: Breaking the Firewall

A New Docuseries
Hosted by Kari Byron

A New Docuseries Hosted by Kari Byron
Premieres on August 8th

Premieres on August 8th

08DAYS
05HOURS
09MINS
39SECS
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OPSWAT Blog

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Latest Articles

Apr 2, 2026 | File Security

Zombie ZIP (CVE-2026-0866): How a Malformed Archive Header Is Bypassing 98% of Security Scanners

Ask most security teams how they handle incoming ZIP files and you’ll hear the same answer: “We scan them.” What they mean is that their anti-malware or EDR solution reads the archive’s header, extracts the contents, and scans for known threats. The problem is that most scanning engines trust what an archive declares about itself. Attackers have known how to exploit that assumption for years.
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