Find your breach first.
An AI that thinks like an attacker, tests your whole surface continuously, and proves every finding. Backed by a UK red team.
Autonomous · Agentic · Proven
We didn't build a scanner. We built an attacker.
Two brains, not one model: a chat agent you brief in plain English, and an autonomous swarm that hunts, exploits, and proves. A 9-layer memory makes every engagement sharper than the last.
Real tradecraft, encoded into AI.
Every payload, chain, and evasion in Nebula comes from working pen testers, red teamers, and bug-bounty hunters. Not a research demo: battle-tested offensive tradecraft, encoded into AI and backed by a UK team.
5
LLM engines
80+
Attack skills
60+
Security tools
One target in. A whole team out.
Nebula deploys a coordinated swarm of specialist agents across 30+ roles, spawning more on demand for each finding. A Team Lead orchestrates the operation and chains findings into multi-step attack paths no single tool could discover.
Chain-of-Thought
Multi-step attack planning
Situational Awareness
Real-time defense adaptation
Surface Mapping
Hidden endpoint discovery
Autonomous Pivot
Auto-escalation on findings
It reasons. It doesn't pattern-match.
Chain-of-thought reasoning to plan multi-step attacks, adapt when defenses push back, and understand the full business context of what it's testing. Not pattern matching - genuine offensive reasoning.
Short-Term
Active engagement context
Long-Term
Cross-scan intelligence
Episodic
Past engagement patterns
Semantic
Global attack knowledge
It never forgets a weakness.
Nebula remembers which payloads bypassed your WAF, which endpoints were patched, and which attack chains still work. A 9-layer memory system that mirrors how human experts retain knowledge - every scan feeds back into a growing intelligence layer.
No rules.
Just reasoning.
Zero hardcoded logic: which surface to hit, which exploit to try, when to pivot, all reasoned live by a multi-model engine that routes each task to the right LLM. Nebula runs the full kill chain across your stack and proves impact in a sandbox.
Tell Nebula What to Hack. In Any Language.
Message Nebula on Slack, Teams, or email in 50+ languages. It understands your target, asks clarifying questions, and builds a complete profile.
Your scanner says you're fine. Nebula disagrees.
Proof-carrying exploit chains, not CVE noise: IDOR, SSRF-to-cloud-takeover, JWT confusion, race conditions, business-logic flaws. Every finding ships with a working reproduction.
Payment Bypass via Race Condition
CRITICALRACE CONDITION → $0 CHECKOUT → UNLIMITED FREE ORDERS.
Nebula analyzed your checkout flow and identified a time-of-check/time-of-use flaw. By sending 50 concurrent requests during the payment verification window, it successfully placed orders with a $0 balance. No scanner would ever find this - it requires understanding your business logic.
# Nebula's autonomous discovery log
[REASONING] Checkout has 3-step flow: cart → verify → charge
[HYPOTHESIS] TOCTOU window between verify and charge
[ACTION] Sending 50 concurrent POST /checkout
POST /api/checkout HTTP/1.1 (x50 concurrent)
Authorization: Bearer <user_token>
{"cart_id":"c_92kx","payment":"tok_verified"}
→ 23 of 50 requests succeeded
→ Total charged: $0.00
→ Orders created: 23 × $299.99 = $6,899.77
→ CRITICAL: Race condition confirmed
→ Slack alert sent to #security-findings
→ Jira ticket SEC-1847 createdWEB APPS · REST & GRAPHQL APIS · AWS / GCP / AZURE · KUBERNETES · ACTIVE DIRECTORY · BUSINESS LOGIC · OWASP TOP 10 · MITRE ATT&CK
The platform attacks. Our team signs off.
Breachline is both a SaaS platform and a UK pentest practice. Nebula tests your surface continuously; our OSCP/CRTO consultants run the scoped, expert-led engagements your board and auditors trust.
Web & Mobile App Testing
Black-box and authenticated testing of web apps, APIs, and mobile, mapped to OWASP and PTES. We chain real exploits to business impact, not CVSS noise.
Infrastructure & Network Testing
External and internal infrastructure, cloud, Kubernetes, and Active Directory. We trace the path from first foothold to domain admin.
Board & Executive Review
Security-posture reviews, secure-architecture and threat-model assessments, and board-ready reporting your leadership and auditors act on.
Red Team & Continuous Assurance
Full-scope adversary emulation, plus Nebula testing continuously between engagements so a new exposure becomes a validated finding in hours.
WHAT WE TEST
Deploy as managed SaaS, inside your private cloud, or fully on-premise and air-gapped.