Plainsea
Plainsea combines autonomous offensive reasoning with continuous execution and full human control - confirming what is actually exploitable at the speed exposure is created.
The Problem
Exposure is created instantly. Traditional testing can't keep up.
Every integration expands the attack surface. Most of it is never fully tested - and the exposure compounds with every new dependency.
Logic flaws hide in how features interact. They don't reveal themselves under time pressure - they require patience, depth, and repeated attempts.
The most dangerous vulnerabilities emerge between services, not within them. They are rarely where anyone is looking.
Code is reaching production faster than anyone can reason about it. The attack surface is growing faster than offensive security testing can follow.
This is not a gap that can be closed with more automated scanners, engagements, or AI agent slop. It requires offensive testing that operates at the speed of exposure.Closing this gap requires offensive testing at the speed of exposure.
The Solution
Built on years of hands-on security expertise, Plainsea combines a complete offensive security delivery platform with autonomous reasoning, continuous execution, and full human control to confirm what is actually exploitable, at the speed exposure is created
The Base
The foundation of the Plainsea platform is built to provide the professional framework and delivery standards required for enterprise-grade offensive security. It ensures that every test is built on practitioner-led methodology and delivered with consistent quality.
See How It WorksEnforce a consistent, practitioner-led offensive methodology across every pentest.
Generate high-fidelity documentation and technical evidence that meets board and regulatory requirements.
Enhance delivery with embedded reasoning to prioritize findings based on real-world exploitability rather than theoretical scores.
Standardize delivery, authorization, and reporting across all environments from a single platform foundation.
Define your targets once. Plainsea agentic AI runs penetration testing continuously or on schedule - confirming what is exploitable without waiting for human availability.
Plainsea agentic AI reasons about your environment, chains multi-step attack paths, and adapts to what it finds, delivering the depth of manual testing at AI speed.
Every action operates within a deterministic safety envelope you define. Critical decisions are validated by a human operator before execution proceeds.
Re-test immediately after every fix, confirming that remediation actually closed the exposure, not just patched the finding.
The Evolution
Plainsea evolves offensive security testing with agentic AI natively integrating the adaptive reasoning of a human tester, continuous autonomous execution, and confirmed exploitability into every pentest.
See How It WorksWhat do you get
Mode 01
Define your testing scope and boundaries once. Plainsea handles the rest - reasoning about your environment, executing offensive actions, and delivering confirmed findings. Human-in-the-loop controls keep you in charge at every critical decision point. No offensive security expertise required.
Every finding that reaches your team is confirmed. You know exactly what is exploitable in your environment, understand the real business impact, and can direct your remediation effort where it actually matters.
Every test produces high-fidelity documentation and a complete evidence trail. When your board, auditor, customer, or regulator asks about your security posture, your evidence is current, complete, and ready.
Mode 02
Manage all your client engagements from a single platform. Scope, execution context, evidence, and historical results are centralized, so consistency and compounding knowledge build across your entire portfolio over time.
Every engagement your team delivers meets the same execution, evidence, and reporting standard - whether it is run by a consultant, an AI agent, or a combination of both.
Match the right delivery mode to each client engagement. Run human-led, AI-assisted, or fully autonomous testing while maintaining the same governance model and evidence standard across your entire operation.
Same platform · Same governance · Same evidence standard
Validation
With its wide array of tools and features, Plainsea is looking to lead the race to become the preferred platform for cybersecurity for both cybersecurity providers and their clients.
BEX, 2024 Bulgarian Cybersecurity Ecosystem Report
This is the solution we've been waiting for - it saves our team time and effort. We manage a large number of systems, and now we can track changes in real time. We run pentests as often as needed, using Plainsea's AI capabilities and as a result our risk has dropped by over 80%.
Senior IT Manager at Telecomm Company
Contact Us
See how Plainsea reduces your exploitable time at risk from first change to confirmed remediation. Book your live demo and speak with one of our experts.
Insights
Explore the latest analysis, trends, and perspectives from the Plainsea team.
The new capabilities give security and engineering teams configurable oversight, AI-native safety guardrails, and clearer visibility into potential risk exposure
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At FutureCon, the company's CSO was recognized for his long-term impact & leadership in cybersecurity.
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Plainsea has shipped a new platform update introducing dedicated remediation management, a more capable AI Penetration Test configurator, as well as a set of interface and component improvements across the product.
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