Discover a simple yet powerful cryptanalysis technique in this 25-minute conference talk from Recon Conference. Learn about contributor analysis, a method for detecting and attacking flawed cryptographic algorithms and implementations. Explore the theoretical principles behind this technique and its relationship to algebraic cryptanalysis. Gain insights into handling contributor lists with common operations and understand how these lists can be used to mount attacks, proving the vulnerability of affected ciphers. Examine real-world examples of ciphers susceptible to this analysis method. No prior mathematical or cryptographical knowledge is required, though some programming or computer architecture background is recommended for a fuller understanding.