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Defence blues
The data egress hunt
  • Red tradecraft
  • Privacy greenhouse
  • Purple crossroads
  • Indigo observatory
  • Contact
Initializing search
    • Blue team @Home
    • Servers without a security team
    • Honeytech for humans
    • Blue team for dev
    • OT and ICS security
    • Counter moves
      • Closing the doors just walked through
      • The machine at the point of impact
      • Traffic patterns as evidence
      • Inter-domain routing as a target
      • The surface designed to be accessible
      • The application layer as a target
      • Infrastructure you defend but do not own
      • Where the container meets the host
      • Systems that were never meant to be networked
      • The domain as an attack graph
      • The gap between access and authority
      • Harvesting stored secrets
      • Surviving the reboot
      • From target to target
      • Plausibility as cover
      • Memory corruption and its limits
      • Watching data being gathered
      • Watching the exits
        • Exfiltration: defender context
        • Detecting exfiltration
        • Steganography
        • ML-based steganalysis
        • Detecting AI-generated steganography
        • Network and behavioural detection
        • The data egress hunt
          • Exfiltration hunting
          • Runbook: analysing images for hidden content
          • Runbook: network traffic analysis for steganographic channels
          • Runbook: investigating suspected steganographic exfiltration
        • The data egress hunt
          • Exfiltration hunting
          • Runbook: analysing images for hidden content
          • Runbook: network traffic analysis for steganographic channels
          • Runbook: investigating suspected steganographic exfiltration
      • Limiting the blast radius
      • Operational cost of security controls
    • Golem Trust Computing Ltd.
    • Civic Defence Establishment
    • The Circle Sea Arrangement
    • Office of Civil Surveys
    • Civil Observers’ Society
    • The Home for Bewildered Beasts of Legend
    • Campaigns, manoeuvres and scenarios

    The data egress hunt¶

    Runbooks for hunting data leaving the environment through unusual channels or volumes, including DNS tunnelling, cloud storage abuse, and anomalous outbound traffic patterns.

    • Exfiltration hunting
    • Runbook: analysing images for hidden content
    • Runbook: network traffic analysis for steganographic channels
    • Runbook: investigating suspected steganographic exfiltration
    2026-07-09 22:41
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