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  • Hybrid event: Quantifying software security - Engineering cyber security - SPA SG

Join the SPA SG as they look at quantifying software security.


Tom Gilb


6:00pm - Meeting opens in holding mode. Sandwiches, fruit and snacks for those at BCS London.
6:30pm - Presentation begins
7:30pm - Opportunity for further questions and answers
8:00pm - Further networking opportunities for those at BCS London.
8:30pm - Event ends


If you are serious about security, it must be engineered quantitatively - as part of your system's engineering. If you do not understand this, you are the most important threat to your own system security!

There is a systematic, quantified "engineering" way to organise security knowledge, so that we can make better decisions. This approach is based on Planguage (Planning Language), the notation defined by Tom Gilb for systems engineering tasks in his groundbreaking textbook, Competitive Engineering.

Just like other requirements of a system, security properties can be identified, quantified, costed, prioritised and traded off against each other and against other properties of the system. Using appropriate tools, you can build digital models of your security options and practices. These models can be kept up to date as more facts are discovered, and by modelling the relationships between different options and practices, their relative cost-effectiveness can be demonstrated.

About the speakers

Tom Gilb

Tom Gilb is an American systems engineer, consultant, and author, known for the development of software metrics, software inspection, and evolutionary processes.

He emigrated to the United Kingdom in 1956 and to Norway in 1958. He took his first job with International Business Machines Corporation in 1958 and became a freelance consultant in 1960. He mainly helps multinational clients improve their organizations and methods by using "evolutionary systems delivery" (Evo).

He has guest lectured at universities all over the United Kingdom, Europe, China, India, the United States of America and Korea, and has been a keynote speaker at dozens of technical conferences internationally.

He is a member of INCOSE and is active in the Norwegian chapter, NORSEC, which presented him with an award in 2003. He lectures at INCOSE local chapters on his worldwide travels and at INCOSE conferences. In 2012 he was made an Honorary Fellow of the British Computer Society.

Our events are for adults aged 16 years and over.

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BCS is following government guidelines and we would ask attendees to continue to also follow these guidelines. Please go to https://www.nhs.uk/conditions/coronavirus-covid-19/ for more information, advice, and instructions.

This event is brought to you by: BCS Software Practice Advancement (SPA) specialist group and BCS Quality specialist group

Hybrid event: Quantifying software security - Engineering cyber security - SPA SG
Date and time
Wednesday 7 June, 6:30pm - 8:30pm
BCS, The Chartered Institute for IT
Ground Floor, 25 Copthall Avenue
This event is sold out