He has been involved with "Cyber Security" (and its various predecessor terms) since the 1980s, in a variety of roles including Investigation / Incident Response, Security Architecture, Systems Accreditation, Research and Technology Management, and Policy Development.

His work on Trustworthy Software originated with leading the original Cabinet Office (CSIA) study on Secure Software Development (SSD), then being the Technical Manager for the Pilot Operation of the CSIA (now CESG) Claims Tested Mark (CCT Mark) Scheme.

He also developed and launched the IT Security Awareness for Everyone (ITSafe) service—now part of GetSafeOnline and helped found the National Information Assurance Forum (NIAF – formerly "GIPSI") which he now Co-Chairs.

Research activity includes leading a NATO Research Task Group (RTG), and being the lead Information Security specialist for the European Commission (EC) funded MS3i and NEISAS[2] Projects.

Ian Bryant has been active in Academia for 3 decades, including: Ian Bryant's primary Standardisation roles are: Internationally, he engages with ISO, IEC, ITU-T, CEN, CENELEC, and ETSI.