Exceptional security for the people-first internet.

Bots used to announce themselves. Now they don't.

Three things changed at once.

Agents drive real browsers.
Real Chrome. The user's own profile. Every bot check waves them through.
Residential IPs are the default.
IP reputation and datacenter blocklists were built for a world bots no longer live in.
Synthetic fleets are already in production.
Anthropic recently caught one - 24,000 accounts distilling its API.

blastdoor sorts people from systems - in milliseconds, by behavior.

Every site with login-gated or pay-gated content needs this.

Allow
Rate-limit
Paywall
Challenge
Refuse

blastdoor watches how a session moves, not where it came from. Real users and AI-piloted browsers leave different traces - at timescales agents can't fake without losing utility.

We surface those traces. You keep the switch.

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The best defense is a great offense.

We build the adversary first. Our detection is trained against agents we built ourselves.

The first fully autonomous LLM worm.

Human-out-of-the-loop by design.

It chooses its own targets, writes its own next step, and rewrites itself when it meets a defense it hasn't seen.

Built in a closed lab, not the wild. The paper is forthcoming; the code is not.

Join the waitlist for the paper

One list. Everything we're building.

Product access, research disclosures, enterprise conversations.