Lab: Trace a Leak — Embed a Hidden Recipient Marker

CompTIA Security+ SY0-701 · Objective 1.4.4.1 — Obfuscation: Steganography
Scenario. You are Diana Vargas, security analyst at Brackwater Freight Co. Last quarter a confidential rate banner was leaked to a competitor, and there was no way to tell which partner's copy got out. Before emailing this quarter's banner image to your distribution partner, Ridgeline Brokers, you will use OpenStego to hide a small, password-protected recipient marker inside the image. If the image ever leaks again, extracting that marker will reveal exactly which recipient's copy was exposed. After embedding it, you'll verify the marker by extracting and opening it.
OpenStego — Data Hiding

Hide Data in Harmless File

Options