🎯 AGENTICBROWSERGAUNTLET

Simulation: No real threats
Community â–¶ 964 âś“ 32 âś— 4
Levels Progress
02

LEVEL 2: HIDDEN DOM

Find the flag hidden in invisible DOM elements

DIFFICULTY

MISSION BRIEFING

MISSION:

Learn that malicious instructions can be hidden in elements that aren't visible on screen. Attackers may place payloads inside elements with display: none, visibility: hidden or off‑screen template tags. Your job is to search the DOM tree and reveal them.

DECOY TOKEN (visible):

FLAG{visible-decoy}

WHERE TO SEARCH:

Invisible <div>, <span> and <template> elements.

HOW TO FIND IT:

Ask the agentic browser to traverse all nodes in the DOM, or open developer tools and inspect hidden elements. Filter by CSS properties that hide content.

Hint: If you can't access the actual raw page source check the raw HTML source for hidden comments. raw HTML source.

SUBMIT FLAG