Charles Mann

Chief Information Security Officer, efex

Charles Mann is efex's Chief Information Security Officer. He leads efex's security governance, risk management and incident response, and owns the information security management system behind efex's ISO 27001 certification. His work covers Essential Eight maturity uplift, third-party and supply chain risk, and security reporting to executive teams and boards.

Briefs by Charles

Cyber Brief · Advisory

22 October 2026

PHP2Shell: what Australian organisations need to do now

Two critical flaws in PHP can let an attacker take control of a web server without a password. Which versions are fixed, how to check your sites, and what to do in what order.

Updated 12:15pm AEDT, 22 October 2026

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