Penetration Testing & Attack Simulation
Plainsea
Agentic AI penetration testing platform for continuous, confirmed exploitability validation.
Plainsea Overview
What it does
Plainsea is an AI-powered Penetration Testing as a Service (PTaaS) platform purpose-built for continuous penetration testing that transforms traditional point-in-time assessments into scalable, ongoing security validation. Born from operational experience at AMATAS, a CREST-certified global MSSP, Plainsea was developed to solve real-world pentesting challenges: high costs, scalability constraints, inconsistent reporting, talent shortages, and inability to keep pace with cloud-native architectures and API sprawl. Founded in 2022 by Marko Simeonov (CEO) and Angel Angelov (CTO), the platform delivers augmented penetration testing combining smart automation with continuous validation and expert human oversight, enabling penetration testers to focus on identifying complex security issues rather than spending weeks on repetitive tasks. The platform demonstrated its "5-Minute Penetration Test" capability at Infosecurity Europe 2024, enabling organizations to achieve 30% faster project turnaround and 45% cost reduction through streamlined junior expert onboarding.
How it works
Core capabilities span the complete pentesting lifecycle within a centralized interface: scoping, automated asset discovery, vulnerability assessment backed by proprietary CVE database from decade+ CREST-certified experience, live collaboration portals, automated reporting with AI-powered summarization reducing report generation burden by 6x, and zero-day retesting workflows. The platform features automated infrastructure mapping, real-time risk assessment using CVSS 3.1 and OWASP methodologies, custom runbook templates for NIST SP 800-171, PCI DSS, HIPAA, and ISO 27001 compliance frameworks, and client-centric portals providing end-clients direct access to project status, findings, and real-time vulnerability updates. AI-powered writing assistance and technical writeup repositories accelerate junior pentester onboarding, while integrations extend to threat intelligence platforms, vulnerability scanners, and project management systems including Jira and ServiceNow.
Credentials and traction
Plainsea is built on the CREST-certified penetration testing heritage of global MSSP AMATAS, from which it originated. It was the only company profiled through a full-length executive interview in The Recursive's 2025 CEE cybersecurity report "Who Is Protecting Europe's Future?". The platform is used by MSSPs and internal security teams serving the finance, healthcare, technology, and critical infrastructure sectors, with adoption across Central and Eastern Europe and expansion into the US and UK markets since 2025.
Key Capabilities
mapped to solution categoriesInitiates penetration testing engagements through a platform interface without requiring a new statement of work for each test, enabling testing at the cadence of development releases.
Automatically re-executes test cases for specific findings after the reported remediation deadline, confirming closure without scheduling a separate engagement.
Manages asset scope definitions, scope change approvals, rules of engagement, and testing windows through a persistent platform interface rather than per-engagement documentation.
Delivers findings through a live client portal as testers discover them, with status, severity, and evidence, instead of a single static PDF at the end of the engagement.
Delivers findings directly into developer ticketing systems (Jira, GitHub Issues, Azure DevOps) alongside standard pentest reports, enabling developer remediation tracking within existing workflows.
Integrations
compatible toolsImplementation & support
Info last updated on May 28, 2026
Vendors
Is this your product?
Claim your profile to connect with the teams looking for your solutions.