What We Do

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ERNW Insinuator

Our company blog is the main source for research and insights created at ERNW, reflections on the information security world, and practical security advice resulting from assessment and consulting projects.

ERNW Research

Our first spin-off focuses on research work of all kinds, which can comprise publicly funded projects, cooperation with universities or fellow researchers, and the supervision and support of ERNW-internal research or methodology-focused projects.

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Troopers

Our IT Security conference offers a high-quality selection of trainings and talks given by IT security practitioners from all over the world. We strive to make TROOPERS an amazing and unforgettable event and to set a new standard in “how to make the world a safer place”.


Services

  • service-assessment

    Assessment

    We provide assessment services such as penetration testing, audits, red teaming, and (closed-source) product evaluations. While we have developed many defined testing methodologies for different technologies, we mainly focus on highly technical and individual assessments. Examples for specialized assessment expertise comprise IoT/embedded/industrial/medical devices, cloud/virtualization/hosting platforms, Microsoft & Active Directory environments, or network/security appliances.

  • service-consulting

    Consulting

    Using the insight from (offensive) assessment projects, we also support our customers during design, implementation, and approval of their IT landscapes by offering design/concept/process reviews, security concept development, risk assessments, product evaluation, or network (security) design.

  • Active Directory-, Azure- & Windows OS Platform Security Services

    In the space of Active Directory, Azure and Windows OS platform security, we provide a wide range of security services from Active Directory assessments to highly individual analysis projects based on specific customer questions and requirements for selected Microsoft products. Typical services we provide can be found here.

  • Red Teaming

    We understand Red Teaming as a holistic assessment of established security measures and its effectiveness. In contrast to classical penetration testing, red teaming includes methods of assessing physical security and specifically considers the human element. As red teaming potentially includes methods of social engineering, appropriate projects are always processed in close cooperation with ERNW’s internal ethics committee.

  • Artificial Intelligence Security

    Developing and implementing new products based on artificial intelligence, particularly generative AI, requires a comprehensive understanding of the associated risks. We assist our customers in recognizing these risks and offer services to evaluate the security of AI technologies from the design phase through to implementation and usage.

  • service-forensic

    Digital Forensics & Incident Analysis/Response

    We support our customers in implementing incident response processes/preparation as well as in analyzing occurred or suspected incidents. Following common incident response process models, we offer the development of incident preparation plans, immediate and on-site incident response and malware analysis, as well as the compilation of technical forensic reports.

  • service-training

    Training & Knowledge Transfer

    We offer training and knowledge transfer for most areas of IT security. The types of trainings range from video content over on-site trainings to gamified IT security challenges. Our public training is exclusively offered by our partner HM Training Solutions or during our TROOPERS conference.

  • service-research

    Research

    Following our knowledge-driven company culture, we offer research services to work on both scientific and pragmatic problems in the IT security space. Past funded research activities focused on Security Awareness, Digital Forensics, Reverse Engineering & Vulnerability Analysis, and telecommunications security. Future activities are coordinated by ERNW Research.

  • service-operations

    Secure IT Operations

    The secure operation of IT systems can be a very specialized task requiring expert knowledge. We are offering the operation of both IT services in a secure way as well as the (secure) operation of IT security services (such as [Web] Application Firewalls, IDPS, or SIEM systems).

Latest Insinuator blog posts

June 20, 2025

Windows Hello for Business – Past and Present Attacks

Windows Hello for Business is a key component of Microsoft’s passwordless authentication strategy. It enables user authentication not only during system sign-in but also in conjunction with new and advanced features such as Personal Data Encryption, Administrator Protection, and Recall. Rather than depending on traditional passwords, Windows Hello leverages a PIN or biometric methods – […]

June 17, 2025

Disclosure: Multiple Vulnerabilities in X.Org X server prior to 21.1.17 and Xwayland prior to 24.1.7

The X11 Window System has been used since September 1987 for Unix desktop systems, allowing applications to display their windows. Today, one of the server implementations of the protocol is the X.Org X server and XWayland, which both use the same codebase. While reviewing the X server, several legacy security issues were identified. These appear […]

June 13, 2025

Using the Raspberry Pi Pico W as a Bluetooth Dongle

During our recent research, we experimented with different Bluetooth USB dongles. There are tons of options, and sometimes, it’s challenging to determine what chipset a dongle actually contains, what Bluetooth features it supports, and whether it works on Linux. Inspired by the recent ESP32 Bluetooth research, we wondered whether we could turn our Raspberry Pi […]

May 08, 2025

Disclosure: Input Validation Vulnerabilities in Microsoft Bookings

In a recent customer project, we discovered vulnerabilities in Microsoft Bookings, an online appointment scheduling tool integrated into Microsoft 365, allowing companies to have customers book meetings in available times themselves. The findings originate from insufficient input validation on the public meeting scheduling endpoint. Although Microsoft has largely mitigated this vulnerability, our analysis provides important […]

May 05, 2025

Full Disclosure: Multiple Rundeck Job Command Injections

During a red-teaming-style customer project, we managed to get access to an Rundeck API token. Rundeck is a job scheduler and runbook automation platform designed to automate routine IT tasks across multiple systems. At first, we were excited about this API token because if we could create new Rundeck jobs, we could execute arbitrary code […]

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