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Explore critical cryptographic vulnerabilities in the Matrix standard for federated realtime communication and its flagship client, Element, in this 34-minute Black Hat conference talk. Delve into how these flaws compromise confidentiality and authentication guarantees against malicious servers, despite the use of well-known cryptographic building blocks. Learn from security experts Martin Albrecht, SofÃa Celi, Benjamin Dowling, and Dan Jones as they present their findings and discuss the implications for Matrix's security claims.
