ZeroFont trick makes users think that message has been scanned for threats ZeroFont trick makes users think that message has been scanned for threats Attackers are using the "ZeroFont" technique to manipulate the preview of a message to suggest it had already been scanned for threats. Read more in my article in the Tripwire State of Security blog. Read More Graham Cluley September 29, 2023 1 minute read Attackers are using the “ZeroFont” technique to manipulate the preview of a message to suggest it had already been scanned for threats. Read more in my article in the Tripwire State of Security blog. Read More Read moreBuilding cyber skills and roles from CyBOK foundationsGraham Cluley About The Author See author's posts Related Post navigation Previous: Post-Quantum Cryptography: Finally Real in Consumer Apps?Next: CISA Warns of Old JBoss RichFaces Vulnerability Being Exploited in Attacks Related Stories Pentagon Designates Anthropic Supply Chain Risk Over AI Military Dispute Security Aid February 28, 2026 Trump Orders All Federal Agencies to Phase Out Use of Anthropic Technology Security Aid February 27, 2026 Microsoft testing Windows 11 batch file security improvements Security Aid February 27, 2026