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NSA Codebreaker 2025: My First Full Challenge

Seven tasks spanning forensics, reverse engineering, cryptanalysis, and application security

The 2025 NSA Codebreaker Challenge was my first Codebreaker, and I completed all seven tasks, becoming one of 82 students to finish the full challenge. It was a …

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NSA Codebreaker 2025 β€” Task 7: Finale

Archive handling and the boundary between data and code

← Series overview The final task supplied a custom Android APK used to archive chat messages. It brought together application reverse engineering, archive …

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NSA Codebreaker 2025 β€” Task 6: Crossing the Channel

A lesson in destination-specific authorization

← Series overview Task 6 shifted the investigation into a Mattermost environment. The challenge supplied persistent application data and an account with access …

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