Active Countermeasures is a cybersecurity firm dedicated to empowering organizations to detect and respond to malicious network activity with unparalleled speed and accuracy. Founded by leading experts in the field, the company offers a comprehensive suite of solutions including practical, hands-on cybersecurity training courses, free open-source tools (like RITA - Real Intelligence Threat Analytics), and commercial products such as AC-Hunter. Active Countermeasures leverages artificial intelligence and machine learning to enhance threat hunting capabilities, enabling security teams to proactively identify and neutralize advanced persistent threats (APTs) and other sophisticated attacks. Their focus is on providing actionable intelligence and practical skills to cybersecurity professionals, helping organizations bolster their defenses and minimize the impact of security incidents.
Serves as the central hub for research and development, product creation (including AC-Hunter and RITA), training program development, and overall company administration.
Focuses on a functional and secure environment conducive to cybersecurity innovation rather than prominent architectural features. Likely a modern office setup supporting tech development.
Emphasizes expertise, continuous learning, and a proactive, hands-on approach to cybersecurity. The culture is collaborative, with a strong focus on practical application, research, and community contribution (e.g., free tools, educational webcasts).
Strategic location in South Dakota allows for a focused work environment while serving a global cybersecurity market through digital products and remote training.
Active Countermeasures supports a global clientele through its online training platforms (like Wild West Hackin' Fest training and Antisyphon Training, often associated with its founders), software products (AC-Hunter, RITA), and remote support. While headquartered in the US, their educational content and cybersecurity tools are utilized by professionals and organizations worldwide, enabling global threat hunting and security posture enhancement.
Specific office address not publicly disclosed; primary operations in Spearfish.
Spearfish
South Dakota
USA
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As of April 2025, Active Countermeasures' leadership includes:
Active Countermeasures has been backed by several prominent investors over the years, including:
No major public announcements regarding executive hires or exits have been identified for Active Countermeasures in the last 12 months. The leadership team appears stable based on publicly available information.
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Active Countermeasures commonly uses the email format where the employee's first name is followed by the @ symbol and the company domain (activecountermeasures.com). While other formats might exist within the organization, this is a frequently observed pattern for external communications.
[first]@activecountermeasures.com
Format
chris@activecountermeasures.com
Example
80%
Success rate
Active Countermeasures Blog • May 16, 2024
Active Countermeasures provides a step-by-step guide for organizations looking to establish or enhance their threat hunting capabilities, emphasizing practical approaches and tool integration....more
Active Countermeasures Blog • April 25, 2024
This article explores using the DCEPT project for cyber deception within Active Directory environments, a technique to misdirect and detect attackers, aligning with Active Countermeasures' proactive security philosophy....more
Active Countermeasures Blog • February 20, 2024
Active Countermeasures announces ThreatSync, a new real-time threat intelligence feed integrated into its AC-Hunter platform, designed to enhance detection of emerging threats by providing up-to-date indicators of compromise....more
Active Countermeasures Blog • January 23, 2024
A guide on utilizing RITA, Active Countermeasures' free and open-source tool for network traffic analysis and beacon detection, to identify command and control channels....more
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