Accordingly, this series focuses on providing a clear high-level summary, deliberately not delving into technical details. Here is a re-recording of this talk:ĭisclaimer: This series is intended as an overview for everyone interested in the subject of harnessing AI for anti-abuse defense, and it is a potential blueprint for those who are making the jump. This series of posts is modeled after the talk I gave at RSA 2018. Following the natural progression of building and launching an AI-based defense system, the second post covers the challenges related to training and the fourth and final post looks at how attackers go about attacking AI-based defenses. The first post explains why AI is key to build robust anti-defenses that keep up with user expectations and increasingly sophisticated attackers. This post is the third post in a series of four that is dedicated to providing a concise overview of how to use artificial intelligence (AI) to build robust anti-abuse protections. This post explore those two challenges in turn. The need to handle errors correctly can be broken down into two challenges: how to strike the right balance between false positives and false negatives, to ensure that your product remains safe when your classifier makes an error and how to explain why something was blocked, both to inform users and for debugging purposes. Other ways of avoiding attack include evasion, trapping, slipping and deflection of the oncoming attack this approach is often referred to as the application of 'soft' techniques (see hard and soft (martial arts)).This post looks at the main difficulties faced while using a classifier to block attacks: handling mistakes and uncertainty such that the overall system remains secure and usable.Īt a high level, the main difficulty faced when using a classifier to block attacks is how to handle mistakes. It is also common to use the knee to block leg attacks from an opponent.īlocks are considered by some to be the most direct and least subtle of defensive techniques. For example, a kick or palm strike can be used to neutralize an incoming blow. Offensive techniques can also be used to block. More complex blocks include the circular block, X block, high X block, twin forearm guarding block, hooking block, and pole block. Parries are executed against the attacker by quickly pushing their arm or leg away to the right or left side( as it is considered as a block) and counterattacking when the procedure is done.
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