Capture the flag5 flagsbeginner-friendly

Five flags. One site.

I've hidden five flags across harshsec.in. They all look like HSEC{…}. No hacking the server, no brute force — just curiosity and the tools already in your browser.

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Open one only when you need it.

Flag 01

Every page has two faces: the one you see, and the one your browser reads. Try Ctrl U on the homepage.

Flag 02

Search engines get their own instructions. Where would a site tell a crawler where not to go?

Flag 03

Developers talk to themselves in a place most visitors never open. F12 might help.

Flag 04

There's a string in the footer of the work log that looks like gibberish. It isn't encrypted — it's just encoded.

Flag 05

My AI terminal answers questions — but a few classic Linux commands are handled before the AI ever sees them. What would an attacker try first once they're "in"?

Found a real vulnerability instead? Please don't post it here — see security.txt and email me privately.