Acros Security - Slovenian business dedicated to locating security problems in network systems software and hardware.
Covert Systems - Specializes in network penetration analysis, systems configuration and managed services.
Data Cog Corporation Limited - Penetration testing and other security consulting services, and IDS solution. Service and product information, company news and contact details.
Digital Defense Inc. - Offers a range of penetration testing and vulnerablity assement services as well as policy development and security management.
Greyhat, LLC. - Specializes in penetration testing, vulnerability assessments, network, commerce and business security, intrusion detection and response, risk mitigation, and consulting services.
Ilion Security SA - Ethical hacking and computer security training. Geneva, Switzerland.
ITamon - Provides services for security, investigation, web security and ICT awareness. Specializes in penetration testing.
Madison Gurkha, - A consultancy firm based in The Netherlands providing penetration testing and auditing and subsequenet threat mitigation services.
mwr InfoSecurity - Provide penetration testing, web application testing, vulnerability assessments, continuous security verifications, wireless security testing, firewall testing, security policy development, and CESG CHECK.
NTA Monitor Ltd. - Specializes in perimeter and penetration testing. Offers facts sheets, and security bulletins. Based in the UK.
Phoenix IT Solutions, LLC: - Offers several security auditing packages include risk assessment and penetration testing. Based in Washington, DC, USA
ProCheckUp Limited - MasterCard SDP compliant penetration and application security testing firm based in the United Kingdom. Offers articles, service information and contact details.
Pure Hacking Pty Ltd - Dedicated penetration testing services focusing on network application and Internet security.
Sec-Tec Limited - Provides product independent digital security services, specialising in penetration testing, technical training and core security consulting. Located in London, England.
SecureCom UK Limited - Provides penetration and wireless security testing, vulnerability assessments, social engineering and full security audits. Based in South England.
Signal Networks Ltd - Provides ethical hacking, assessments and security services.
Tevora Business Solutions - An Irvine, California USA based company that provides assessment, audit, and vulnerability testing as well as firewalls, VPN solutions, and managed services.
White Badger Group, Inc. - Providers of penetration testing, vulnerability assessment, consulting, and educational services.
