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Writeup index

OSINT challenges

Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.

507 in the index. The 200 below are ranked by how many independent published solutions exist - which is the right order for learning, not for difficulty. A challenge with nine writeups gives you nine explanations of the same technique to compare; a harder one nobody documented gives you none.

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