SIGNAL & SHADOW · ARCHIVE

OSINT Cards

The Signal & Shadow OSINT Reference Card library — practical tradecraft built to professional standard.

All Posts

Illegal deforestation detection and supply chain tracing

Environmental & Climate Investigation

Sep 2, 2026

Illegal deforestation detection and supply chain tracing

Derek Bowler

Social media evidence preservation for investigators

SOCMINT

Aug 26, 2026

Social media evidence preservation for investigators

Derek Bowler

Geolocate, fingerprint and attribute IP infrastructure

OSINT Cards

Aug 18, 2026

Geolocate, fingerprint and attribute IP infrastructure

Derek Bowler

Dark Web

Aug 11, 2026

Tor network fundamentals for dark web investigators

Derek Bowler

Civil and criminal judgment research for investigators

Legal & Court Records

Jul 28, 2026

Civil and criminal judgment research for investigators

Derek Bowler

Identifying satellite operators and owners

OSINT Cards

Jul 21, 2026

Identifying satellite operators and owners

Derek Bowler

Cross-platform username tracing to identity attribution

OSINT Cards

Jul 14, 2026

Cross-platform username tracing to identity attribution

Derek Bowler

Secure source communications: Signal, SecureDrop, Tails

OSINT Cards

Jul 7, 2026

Secure source communications: Signal, SecureDrop, Tails

Derek Bowler

Property and land registry investigation

Financial Intelligence

Jul 1, 2026

Property and land registry investigation

Derek Bowler

Aircraft registration and ownership databases

OSINT Cards

Jul 1, 2026

Aircraft registration and ownership databases

Derek Bowler

OSINT Cards

Jul 1, 2026

AIS and MMSI vessel tracking

Derek Bowler

Aviation OSINT: flight tracking to evidentiary standard

OSINT Cards

Jul 1, 2026

Aviation OSINT: flight tracking to evidentiary standard

Derek Bowler

OSINT Cards

Jul 1, 2026

Beneficial owner tracing in maritime structures

Derek Bowler

Company registry research across jurisdictions

OSINT Cards

Jul 1, 2026

Company registry research across jurisdictions

Derek Bowler

Conflict zone mapping: satellite imagery and ACLED

OSINT Cards

Jul 1, 2026

Conflict zone mapping: satellite imagery and ACLED

Derek Bowler

Court record research across jurisdictions

Legal & Court Records

Jul 1, 2026

Court record research across jurisdictions

Derek Bowler

Dark Web

Jul 1, 2026

Dark web access for OSINT investigators

Derek Bowler

Environmental sound analysis for location verification

Acoustic & Technical Analysis

Jul 1, 2026

Environmental sound analysis for location verification

Derek Bowler

Financial record tracing across jurisdictions

Financial Intelligence

Jul 1, 2026

Financial record tracing across jurisdictions

Derek Bowler

Human intelligence sourcing to evidentiary standard

OSINT Cards

Jul 1, 2026

Human intelligence sourcing to evidentiary standard

Derek Bowler

Identifying dark vessel behaviour and AIS spoofing

OSINT Cards

Jul 1, 2026

Identifying dark vessel behaviour and AIS spoofing

Derek Bowler

Image geolocation: methodology and workflow

Geospatial & Satellite

Jul 1, 2026

Image geolocation: methodology and workflow

Derek Bowler

OSINT Cards

Jul 1, 2026

Maritime incident documentation with AIS and IMO data

Derek Bowler

OSINT Cards

Jul 1, 2026

Neutral language cheatsheet

Derek Bowler

OPSEC

Jul 1, 2026

OPSEC for investigators: eight-step security baseline

Derek Bowler