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Who is ERNW?
ERNW is a German IT security company that provides technical security consulting, penetration testing, and security research to enterprises and operators of critical infrastructure.
- Penetration testing and security assessments of networks, applications, and infrastructure
- Security research on telecommunications, industrial control, and embedded systems
- Security architecture review, risk management, and compliance consulting
- Specialized training for security professionals and software developers
- Adversary simulation and vulnerability validation for enterprise environments
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More About ERNW
ERNW positions its offerings for enterprises, telecommunications operators, and operators of industrial environments that require independent technical validation of their security controls. Engagements typically combine penetration testing, configuration reviews, and architecture assessments that map findings to recognized control frameworks such as ISO/IEC 27001 and the OWASP testing methodologies for web and mobile applications.
The company's technical work spans network infrastructure, cloud and virtualized environments, wireless and mobile networks, and embedded and operational technology systems. Its research program has focused on protocol-level analysis and hardware-adjacent security, which informs the methodology used in client assessments and supports coordinated disclosure of vulnerabilities to affected vendors.
In enterprise environments, these services are generally used at several points in the lifecycle: before deploying new platforms, during regulatory or audit preparation, and as recurring validation after architecture changes. Security assessments in regulated sectors often need to align with national guidance, and ERNW's consulting covers that alignment alongside technical testing.
Compared with broader managed security providers, a specialized consultancy like ERNW emphasizes depth of manual testing and adversary-focused analysis rather than continuous monitoring. Organizations often use such firms to complement internal security operations and product-based controls rather than as a replacement for them.
The business significance of this focus lies in the independent verification it provides. Findings from deep technical testing can expose weaknesses that automated scanners miss, particularly in protocol implementations, custom integrations, and legacy systems. Training offerings extend this capability by building internal expertise among developers and security teams.
Its current solution areas center on offensive security testing, security consulting, and specialized research and training, serving customers in the IT security services market.
Our description of ERNW. Updated October 2026.
