SIGNAL & SHADOW · ARCHIVE

OSINT Cards

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

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OPSEC

Jun 5, 2026

OPSEC for investigators: eight-step security baseline

Derek Bowler

Procurement database investigation: TED to Aleph

OSINT Cards

Jun 3, 2026

Procurement database investigation: TED to Aleph

Derek Bowler

Using AI tools in the verification workflow

OSINT Cards

Jun 2, 2026

Using AI tools in the verification workflow

Derek Bowler

Image geolocation: methodology and workflow

Geospatial & Satellite

Jun 1, 2026

Image geolocation: methodology and workflow

Derek Bowler

Satellite pollution documentation with SAR imagery

Environmental & Climate Investigation

May 31, 2026

Satellite pollution documentation with SAR imagery

Derek Bowler

Social media account verification for investigators

SOCMINT

May 30, 2026

Social media account verification for investigators

Derek Bowler

WHOIS investigation: from domain name to attribution chain

OSINT Cards

May 29, 2026

WHOIS investigation: from domain name to attribution chain

Derek Bowler

Dark Web

May 28, 2026

Dark web access for OSINT investigators

Derek Bowler

OSINT Cards

May 27, 2026

Verifying casualty and death figures

Derek Bowler

Court record research across jurisdictions

Legal & Court Records

May 26, 2026

Court record research across jurisdictions

Derek Bowler

Weapons and munitions identification from audio

Acoustic & Technical Analysis

May 25, 2026

Weapons and munitions identification from audio

Derek Bowler

Satellite constellation tracking and databases

Geospatial & Satellite

May 24, 2026

Satellite constellation tracking and databases

Derek Bowler

Reverse image search and facial comparison

OSINT Cards

May 23, 2026

Reverse image search and facial comparison

Derek Bowler

Human intelligence sourcing to evidentiary standard

OSINT Cards

May 22, 2026

Human intelligence sourcing to evidentiary standard

Derek Bowler

Financial record tracing across jurisdictions

Financial Intelligence

May 21, 2026

Financial record tracing across jurisdictions

Derek Bowler

Aviation OSINT: flight tracking to evidentiary standard

OSINT Cards

May 20, 2026

Aviation OSINT: flight tracking to evidentiary standard

Derek Bowler

Phone number analysis and carrier lookup

OSINT Cards

May 12, 2026

Phone number analysis and carrier lookup

Derek Bowler

OSINT Cards

May 5, 2026

Sanctions evasion and ship-to-ship transfer patterns

Derek Bowler

OSINT Cards

Apr 28, 2026

Maritime incident documentation with AIS and IMO data

Derek Bowler

OSINT Cards

Apr 21, 2026

Beneficial owner tracing in maritime structures

Derek Bowler

Port state control and vessel inspection records

OSINT Cards

Apr 8, 2026

Port state control and vessel inspection records

Derek Bowler

Identifying dark vessel behaviour and AIS spoofing

OSINT Cards

Apr 7, 2026

Identifying dark vessel behaviour and AIS spoofing

Derek Bowler

Ship ownership and flag state registries

OSINT Cards

Apr 6, 2026

Ship ownership and flag state registries

Derek Bowler

OSINT Cards

Apr 5, 2026

AIS and MMSI vessel tracking

Derek Bowler

OSINT Cards

Apr 1, 2026

Neutral language cheatsheet

Derek Bowler