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OpenAI Details Defense Factory After 250+ Person Security Sprint

September 9, 2026 at 16:38 EDT

Security
AI Agents

OpenAI has detailed a “Defense Factory,” an agent-first security operation designed to continuously inventory systems, find and validate vulnerabilities, assign owners, and verify fixes. The company says an internal sprint mobilized 250+ people across 100+ service areas and closed 53 urgent or high-priority issues on its first day. OpenAI’s Defense Factory

SEPTEMBER 2026 · OPENAI

Defense Factory: continuous cyber defense

OpenAI says a 250+ person security sprint became a continuous loop for finding, validating and fixing vulnerabilities across more than 100 service areas.

The sprint at a glance

250+

people mobilized

100+

service areas covered

urgent or high-priority issues on day one

0.81%

false-positive rate after dynamic validation

Reported issue closures

Both figures count issues; scopes and time windows differ.

The five-stage defensive loop

Inventory

Map and link systems

→

Discovery

Scan and analyze

→

Dynamic validation

Reproduce and confirm

→

Assign owner

Route with evidence

→

Verify remediation

Patch, deploy, retest

Evidence gates the automation

Findings are reproduced in isolated environments, patches are reviewed before deployment, and deployed fixes are independently checked.

Start with small batches; expand autonomy as results earn trust.

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