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Explore compression oracle attacks on VPN networks in this 43-minute Black Hat conference talk. Delve into the vulnerabilities of browser requests and responses tunneling HTTP traffic through VPNs, and investigate potential attacks on ESP Compression and other encryption-based optimizations in tunneled traffic. Learn about compression basics, observe encrypted traffic, and understand the CRIME attack. Examine the setup, requirements, and detection methods for these attacks, with a focus on Chrome and CloudFlare implementations. Gain insights into future attack possibilities, including TimeBreach and TLS VPNs. Conclude with a summary and Q&A session led by speaker Ahamed Nafeez.
