| Zylt Information Security Provides audits, rish assessments, policy and procedure development, compliance and related services. | |
| YourTechnician.com Provides computer forensics, computer investigation, password recovery and network security services in the central North Carolina area. | |
| Yantrax BVBA Offers consultancy and auditing services, software tools, and resources. | |
| xpd systems ab Independent security consulting and research firm focused on perimeter security solutions. | |
| Xacta Corporation Provides enterprise risk management, management and monitoring consulting, and network security. | |
| Worthy Associates Provides IT Security articles and advice to the IT community, as well as vulnerability assessments to governemetn and commercial interests. | |
| Wired Security Solutions Information Security Provides audits, regulatory compliance services, security design, intrusion detection systems and security policy development services. | |
| Wilson Consulting Provides network security auditing and analysis, vulnerability assessment, penetration testing, remediation, information security policy and procedures development, and business continuity planning for small to medium sized businesses. | |
| Will Docken Investigations Offers computer forensics, consulting, expert testimony, dedicated hands-on case work, and educational forensic presentations. | |
| WholeSecurity Performing external and internal security audits and security software implementation. | |
| WhiteHat Security An Internet security consulting firm and audit provider specializing in web application security for commerce and communication of corporations around the world. | |
| WhiteHat Inc. An IT security provider, offering services, education and training as well as selected security products. Offices in Canada and the United States of America. | |
| WhiteHat Consulting Consultancy addressing corporate security needs with CISSP qualified personnel. Offices in the United Kingdon and Australia. [May not work properly in all browsers.] | |
| WhiteGold Solutions IT security firm located in Australia, specializing in firewall solutions. | |
| White Wolf Security Offers information security and assurance training programs and portable lab environments. Based in Lancaster, Pennsylvania, USA. | |
| Webfargo Data Security LLC Provider of consulting and assessments specializing in both deployment and management of information security. | |
| Wavenet Provides services such as server management, remote monitoring and maintenance, network security and disaster recovery. | |
| Watson SCS Provides identiy and access management services and solutions based on IBM Tivoli. | |
| Waterside Resources Ltd Provides services and products to small to medium sized businesses specializing in network and Internet security, firewalls, VPN, anti-virus and content security. | |
| Wainwright Consulting Provides security, network, and internet consulting services in the Minneapolis and St. Paul areas of Minnesota. | |