KNOWLEDGE NOTES

Knowledge Notes

Explore curated knowledge, course notes and methods, with their existing content and sources preserved.

This index lists complete English editions. Additional Chinese notes and bilingual updates remain available in the Chinese index.

350knowledge notes

AI Engineering ／ Cross-source synthesis

AI Content Watermarking and Provenance (Offense/Defense + Strategy)

Invisible AI watermarks can be removed via spectral analysis without any loss of image quality (empirically demonstrated by reverse-SynthID) → watermarks are a provenance tool for honest users, not ironclad anti-forgery evidence; content producers should layer multiple signals and proactively apply compliance labeling.

Content Traceability Digital Watermarking AI SecurityEnglish edition

AI Engineering ／ Cross-source topic compilation

Claude Code Security Sandbox: Bubblewrap, Permissions, and Context Boundaries

Explains Claude Code's Linux Bubblewrap sandbox, file and network boundaries; provides verified minimal examples and in-product checking steps, while retaining historical security analysis and competitor comparisons.

AI Security Privacy Protection Tool SecurityEnglish edition