A42 is an automated cybersecurity platform that continuously monitors your company's external digital perimeter. It discovers all subdomains (including shadow assets), detects exploitable vulnerabilities, monitors the dark web for leaked credentials, and delivers bi-weekly security reports without manual intervention.

How often does A42 scan my assets?

A42 performs automated bi-weekly scans of all your assets with scheduled recursive scanning — no manual input required from your security team.

What is external perimeter monitoring?

External perimeter monitoring is the practice of continuously scanning all internet-facing assets of your company — domains, subdomains, IPs, and exposed services — to detect vulnerabilities before attackers exploit them. A42 automates this, discovering even shadow assets your team may not know about.

Does A42 detect leaked credentials on the dark web?

Yes. A42's Dark Web Monitoring scans dark web sources for leaked credentials and sensitive data linked to your domain shared in illicit databases, helping you respond before attackers exploit the information.

A42 is used by IT security teams, DevOps engineers, CTOs, and business owners. Clients include Jooble (international job platform, 67 countries), DOT (Ukrainian government agency supporting the Armed Forces), fintech companies, and e-commerce platforms.

How is A42 different from traditional scanners like Tenable?

Unlike Tenable, which requires manual configuration of scan targets, A42 automatically discovers all subdomains and exposed services — including ones never added to a scan scope. A42 detects exploitable vulnerabilities, not just alerts, reducing noise and focusing on real risks.

A42 is a Ukrainian company (A42, LLC, reg. №45790296), headquartered at 17 Hlybochytska str., Kyiv, Ukraine, 04052. The team has deep expertise in offensive security and cyber defense, with government and NATO partnerships.

About A42

A42 is a Ukrainian deep-tech company established in 2024, operating at the intersection of Artificial Intelligence, Cybersecurity, and Digital Trust.

We develop proprietary technologies designed to automate cybersecurity operations, improve cyber resilience, and support risk-informed decision-making through Artificial Intelligence, advanced analytics, and security automation.

Our Mission

A42’s mission is to make cybersecurity affordable. We develop enterprise-grade tools that are available even to teams with limited resources

Our Vision

Our vision is to create an ecosystem of cybersecurity tools and services that cover the full spectrum of clients’ cybersecurity needs: from vulnerability detection to building effective cybersecurity processes within organizations – and make them accessible to any company

Our Values

Reliability & Trust

Gov & Defence Tech-level security

Continuous Improvement

As cybersecurity constantly evolves, so do we

Secure Innovation

Secure-by-default for fast-moving teams. Including ours

Security for All

We want to live in a more secure environment. That is why we make cybersecurity affordable and share knowledge to build a more resilient world

Key focus areas

Artificial Intelligence (AI);
Cybersecurity;
Trustworthy AI;
AI Governance;
Security Automation;
Digital Trust;
Critical Infrastructure Protection;
Cyber Resilience.

Why Trust A42

15+ Years in Cybersecurity & Software Engineering

Built on a deep understanding of what companies need — and how to build it.

Research-Driven Cybersecurity

A42's dedicated Research Department powers applied research, technology validation, and the next generation of AI-driven security.

Powered by AI Agents, Verified by Humain

The best of both worlds: the speed and coverage of AI, the accuracy of human verification.

Best Playbooks from Gov & Defence Tech

Products forged from real playbooks used by elite white hat hackers in the toughest digital battlegrounds — Gov & Defence Tech.

Built Alongside Startups

We build products and services with a deep understanding of what early-stage companies need thanks to partnerships with the startup ecosystem.

Trusted in Public-Private Partnerships

Built on hands-on experience working with regulators, the public sector and civil infrastructure, with compliance requirements in mind from day one.

Made in Ukraine

The best Ukrainian technologies, proven effective in the face of the harshest challenges.