Malware Signing: When Trust Becomes an Attack Surface
Barracuda Networks, Tuesday, August 4th, 2026
Barracuda examines how abused code-signing certificates turn digital trust into an attack surface.
Barracuda analyzes malware signing and how it converts digital trust into an attack surface. Signed malware blends in with legitimate software because operating systems and security tools treat valid signatures as a trust signal.
The article covers how attackers obtain and abuse code-signing certificates, including through theft and fraudulent purchase.
It draws on the Fox Tempest takedown to show how commercialized the trade in certificates has become.