SANS Reading Room — OSINT

Peer-reviewed whitepapers (free with registration)

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Related in Extra Resources

inteltechniques.com

Official site with book updates, podcast & tools (current edition available on Amazon)

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bellingcat.com

Free guides, case studies & methodology articles

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bellingcat.com

Live, searchable toolkit maintained by Bellingcat

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sans.org

DFIR whitepapers, free

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sans.org

Course outline, free sample content

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csrc.nist.gov

Official US gov PDF, free

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