How to fit threat modelling into agile development: slice it up

DevSecCon London 2018 Speaker
18 Oct 2018
10:20 - 12:40
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How to fit threat modelling into agile development: slice it up

The earlier in the lifecycle you pay attention to security, the better are the outcomes. Threat modelling is one of the best techniques for improving the security of your software. It is a structured method for identifying weaknesses on design level. However, people who want to introduce it into their work on existing codebase often face time pressure and very rarely can a company afford “security push”, where all new development stops for a while in order to focus on security. Incremental threat modelling that concentrates on current additions and modifications can be time-boxed to fit the tightest of agile life-cycles and still deliver security benefits. Full disclosure is necessary at this point – threat modelling is not the same as adding tests to the ball of mud codebase and eventually getting decent test coverage. You will not be able to get away with doing just incremental modelling, without tackling the whole picture at some point. But the good news are you will approach this point with more mature skills from getting the practice, and you will get a better overall model with less time spent than if you tried to build it upfront. We will cover the technique of incremental threat modelling, and then the workshop will split into several teams, each one modelling an addition of a new feature to a realistic architecture. The participants will learn how to find the threats relevant to the feature while keeping the activity focused (i.e. not trying to boil an ocean). This session targets mainly developers, qa engineers, and architects, but will be also beneficial for scrum masters and product owners.

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