dbse
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Some of what you see here is sample content. While the community forms, part of the members, reviews, ratings and discussions are seeded examples. Every one is badged Sample, and they do count towards the totals on this site. Vendor pages, the security data and the tools are real.
ctf.dbse.org.in

Monthly challenges for people who defend things.

Jeopardy-style, browser-only, no infrastructure to break. Log triage, encodings, phishing headers, vendor landscape, and the odd web puzzle. Flags look like dbse{...}. Sponsored tracks are always labelled.

Past events

How it works. Sign in, open a live event, submit flags. Points are fixed per challenge; ties break on who finished earlier. Twenty wrong guesses on one challenge in an hour pauses you. Solutions may be discussed in the forums after an event ends, never during.