# Signal & Shadow

> Independent OSINT and digital forensics publication for investigative journalists and analysts, founded by Derek Bowler.

## The Signal
- [Issue #007: Water utilities hacked, attribution unconfirmed](https://signalandshadow.io/p/water-utility-plc-exposure)
- [Issue #006: Testing Perenco's Congo gas flare claim](https://signalandshadow.io/p/congo-gas-flare-detection)
- [Issue #005: The name DHS wouldn't confirm](https://signalandshadow.io/p/ice-agent-identity-verification)

## Guides
- [What is OSINT](https://signalandshadow.io/p/what-is-osint)
- [How to investigate a company with OSINT](https://signalandshadow.io/p/how-to-investigate-a-company-osint)
- [Email OSINT: trace an address to accounts and infrastructure](https://signalandshadow.io/p/how-to-trace-an-email-address-osint)
- [Email account enumeration beyond Holehe](https://signalandshadow.io/p/email-account-enumeration-tools-beyond-holehe)
- [How to verify a source's professional identity](https://signalandshadow.io/p/how-to-verify-a-source-osint)
- [Telegram OSINT: investigate channels, groups and users](https://signalandshadow.io/p/telegram-osint-channel-investigation)
- [Discord OSINT: resolving user IDs and verifying servers](https://signalandshadow.io/p/discord-osint-servers-user-ids)
- [Instagram OSINT: metadata, network and identity checks](https://signalandshadow.io/p/instagram-osint-metadata-network)
- [Reddit OSINT: investigating accounts and deleted content](https://signalandshadow.io/p/reddit-osint-deleted-content)
- [TikTok OSINT: tracing and archiving video content](https://signalandshadow.io/p/tiktok-osint-tracing-archiving)
- [Maritime OSINT: how to investigate vessels](https://signalandshadow.io/p/maritime-osint-vessel-tracking-investigation-guide)
- [How to investigate an aircraft: tail number to owner](https://signalandshadow.io/p/how-to-investigate-an-aircraft-osint)
- [GitHub OSINT: finding exposed secrets and infrastructure](https://signalandshadow.io/p/github-osint-secrets-infrastructure)
- [Shodan OSINT: finding exposed infrastructure](https://signalandshadow.io/p/shodan-osint-exposed-infrastructure)
- [Sherlock OSINT: username pivoting beyond WhatsMyName](https://signalandshadow.io/p/sherlock-osint-username-pivoting)
- [Maltego OSINT: building an investigation graph](https://signalandshadow.io/p/maltego-osint-investigation-graph)
- [SpiderFoot OSINT: automated reconnaissance scanning](https://signalandshadow.io/p/spiderfoot-osint-automated-recon)
- [Kali Linux for OSINT: setup and toolchain](https://signalandshadow.io/p/kali-linux-osint-setup-and-toolchain)
- [Court judgment and case record research](https://signalandshadow.io/p/reading-court-judgments-osint)
- [Free OSINT tools and frameworks: 2026 toolkit](https://signalandshadow.io/p/free-osint-tools-and-frameworks)

## Methods
- [Network mapping with Maltego and Gephi](https://signalandshadow.io/p/network-mapping-maltego-gephi)
- [Reverse image search and facial comparison](https://signalandshadow.io/p/reverse-image-search-osint)
- [Detecting deepfakes in video and audio](https://signalandshadow.io/p/deepfake-detection-video-audio)
- [Clean research browser: Firefox and Mullvad](https://signalandshadow.io/p/clean-research-browser-osint)
- [Investigating yourself: OSINT dry run](https://signalandshadow.io/p/investigating-yourself-osint-dry-run)
- [Legal and ethical boundaries of OSINT](https://signalandshadow.io/p/gdpr-osint-lawful-basis-defensible-collection)

## AI in OSINT
- [Breach data identity disambiguation](https://signalandshadow.io/p/breach-data-identity-disambiguation)
- [Cross-platform username attribution with AI](https://signalandshadow.io/p/username-cross-platform-attribution-ai)
- [Source presence verification prompt](https://signalandshadow.io/p/source-presence-verification-prompt)

## More
- [Full archive of Guides, Methods, AI in OSINT and Reference Cards](https://signalandshadow.io/archive)
- [OSINT Tool Database](https://signalandshadow.io/osint-tool-database)
- [Verification Standards (SIG-STD-002)](https://signalandshadow.io/verification-standards)
- [About Signal & Shadow](https://signalandshadow.io/about)