PDF (104 Pages): Berkeley Protocol on Digital Open Source Investigations
Phi Beta Iota: If you want to be a drunk under the streetlamp looking for keys far far away, this is the best manual available. It is also a road map for FAKING digital online sources. OSINT is HUMINT. Harnessing digital volunteers is helpful — Crisis Mappers demonstrated that until they were bought out and repressed — but anyone who thinks online is more than 10-15% of the solution is stupid or corrupt.
