- Aladdin Knowledge Systems
 - Supplier of information security solutions for software developers including HASP and ASE. Develops, manufactures, and markets proprietary software security and smartcard products. - @Stake
- Services include infrastructure operations and content security, application security and access control.
- A1 Security
- U.K. computer and equipment security specialists.
- Activis
- Offers services for Internet security including managed firewalls, e-mail content filtering, virus protection, and vulnerability scanning.
- ADDSecure.Net, Inc.
- Services provided include website certification and IS/Recon.
- Alteus, Inc.
- Offers data security and network infrastructure products and services.
- AmbironTrustWave
- Provider of information security and compliance management solutions to businesses in the Fortune 2000 and the public sector.
- Ankari
- Offers authentication, network security software, and IT security solutions.
- Arbor Networks
- Developers of Peakflow DoS, which helps service providers, hosting providers, and enterprises counter availability threats.
- Az-Tech Software, Inc.
- Baltimore Technologies
- Develops security products and services that enable companies to develop secure systems for e-business, the Internet, and mobile commerce.
- BeenVerified
- Marketing and online identity management tool for individuals and organisations to more effectively establish verified identities and credentials.
- Blue Coat Systems
- Port 80 security solutions built to protect corporate networks against Web-based viruses, unfiltered inbound and outbound Web communication, and inappropriate Web content.
- BRAK Systems, Inc.
- Designs solutions incorporating firewalls, intrustion detection, and authentication based on corporate clients' needs.
- C&A Security Risk Analysis Group
- Offers risk assessment products.
- CCI Networks, Inc.
- Provider of integrated security products and services.
- CE-Infosys
- Provider of advanced network and data security systems, offering Internet security, firewall, VPN, access control, secure remote access, and more. Site in English and German.
- Centurion Technologies, Inc.
- Makers of Centurion Guard(tm) electronic hard drive protection.
- Chrysalis-ITS
- Hardware Security Module (HSM) vendor offering securing and accelerating applications for electronic financial transactions, SSL, smart card Issuance, and document security.
- CipherOptics
- Provider of data protection and network encryption appliances to secure network data in motion over IP.
- Communication Devices Inc.
- Manufacturer of data security products for secure remote access using DES tokens and providing full data encryption.
- Computer Security Superstore
- One stop shopping for Computer Security products, services and information.
- CounterStrike
- California-based Internet and computer network security monitoring company. Also provides investigations and intelligence and technical security countermeasure services to businesses.
- Crypto-Solutions
- Provider of network security and authentication consulting and services.
- CTI Communications
- Markets client/server electronic mailbox packages,IBM3780 Fastsync, Syncpack and Firewall.
- Cyber Protect
- Offers services for network, Internet, email, data, and computer security. These include anti virus protection, firewalls, encryption, Internet copyright laws, and security audits.
- CyProtect AG
- Offers 512 bit polymorphic encryption algorithms and ready-to-use disk, file, and mail encryption tools, as well as professional services in IT security.
- Datakey
- Manufactures smart card technology that authenticates users conducting business over online computer networks and secures communications or transactions over these networks.
- Decros
- Encryption and security systems for PCs and LANs.
- DefendNet Solutions, Inc.
- Specialises in managed Internet security solutions designed to enable data service providers to provide outsourced managed security services to business customers.
- DES Encryption Software Group
- Source of encryption software and cryptography expertise, with emphasis on the DES and RSA algorithms.
- dotEncrypt
- Offers encryption software, content security, and e-commerce and copyright protection.
- e-Security Toolkit
- Offers E-security checklists and audit questionnaires for firewalls, Internet, LAN, networks, and infrastructure.
- Ensure Technologies, Inc.
- Makers of the XyLoc wireless PC security system.
- Enterprise Security World
- Offers audit and security solutions for the iSeries, Linux, NT, OS/390, and unix platforms.
- ESCOM Corporation
- eSec Limited
- Specialises in e-commerce security with products and services for Internet payment, managed network security, and e-commerce middleware.
- Eutron
- Hardware keys, access control and encryption security systems for PCs and LANs.
- F-Secure Corporation
- Provider of centrally managed security products for the mobile enterprise. Formerly known as Data Fellows.
- First Access Ltd.
- Providers of Vicinity Authentication smartcards and access control hardware/software solutions for securing Enterprise network information resources.
- ForeScout Technologies
- Offers clientless Network Access Control (NAC) to secure enterprise networks from non-compliant endpoints and self propagating malware.
- Fortefi Corporation
- Offers enterprise provisioning, identity, and access security management solutions for UNIX and Linux.
- Future Com
- Service-based reseller (SBR) focusing on security and network management tools.
- Future Security Controls Inc.
- Gamma
- Experts in security policy, ITSEC, BS7799, and making your business secure in the information age.
- Glenco Engineering Inc.
- Hardware and software copy protection solutions to combat software piracy.
- Global Information Security
- Provider of security solutions for home, small business, and enterprise-wide environments.
- Guardant
- Offers anti-piracy protection system.
- Guardian Digital, Inc.
- Open Source security company.
- Hackademia
- Provides web-based training in information security.
- Hackers Catalog
- Offers software and hardware tools, files, books, videos, and test chips for cable, satellite, cellular and computer hacking, phreaking, and other fields of interest.
- Hackers Home Page
- Online catalogue designed for the serious computer hacker, phreaker, red boxer, cracker, etc.
- Hifn
- Network security silicon and software for manufacturers of VPNs and other networking equipment.
- HP Security Protection
- Provides applications and and systems to protect computers and businesses from viruses, spyware, and worm threats.
- ID Quantique
- Developers of secure communication systems based on quantum photonics.
- iDefense
- Provides cyber intelligence and risk and crisis management services for companies' IT infrastructure and web sites against hacker attacks.
- Infocell
- Offering managed e-security services including email scanning, content filtering, vulnerability testing, managed firewalls, and VPNs.
- Information Security Policies Made Easy
- Information security policy resource with templates, advice, and instructions based on consulting work with organisations worldwide.
- Information Security Systems
- Part of Crypto AG. Specialise in developing security hardware and security software for secure data transmission, Internet, and radio communication.
- Internet Commerce Corporation
- Provides Internet-based e-commerce services for the business-to-business marketplace.
- Internet Security Sources
- Directory of companies offering Internet security services including blocking, encryption, and virus protection.
- Ion Networks
- Provider of infrastructure security and management services for service providers, enterprises, and governments.
- IT Governance Ltd.
- Offers ISO27001 information security management portal for North America. Features information, books, tools, and advice on ISO 27001 registration.
- Karthika Technologies
- Develops advanced encryption systems technology, specialising in information security.
- Korea Information Security Industry Portal
- Portal promoting the development, improvement, and global marketing of Korean information security.
- Labcal Technologies
- Specialising in network security, smartcards readers, biometrics devices, PKI and other solutions for the information technology security field.
- Lexent Technologies
- Offers two-way remote wireless laptop computer security system employing PC Radar proximity and motion sensing technology.
- Links Business Group LLC
- Offers identity management, digital identity, data security, regulatory compliance, and strategic IT consulting services. Links Business Group provides coverage throughout North America and Europe.
- LockNET, Inc.
- Full-service provider of IT network security, network management, and compliance services. Serves the business, financial, health care, education, and governent industries.
- LURHQ
- Offers managed security services including managed firewall, managed security monitoring, and managed intrusion detection, protection, and prevention.
- MagiQ Technologies
- Developing quantum cryptography products and services.
- Merlin Systems
- Specialises in computer and network security and secure web development and enhancement services.
- Microcosm Ltd
- Copy protection (software and/or hardware based) and software licensing systems. Products include CopyControl and Dinkey Dongle.
- Myrmidon Networks
- Provides security and disaster recovery consulting services as well as a managed security services for clients of all sizes.
- nCircle Proactive Network Security
- Provider of agentless security risk and compliance management solutions.
- NetSieben Technologies
- Provides a network security solution for any sized business.
- Network and IT Security Policies
- Information on policies and how to deliver them.
- Network Solutions Website Security
- Network Solutions provides information and solutions for small business owners relating to domain, website, and email security.
- NetworkGuys, Inc.
- Enterprise network security consulting and integration
- Neupart & Munkedal
- Specialises in doing Internet Security scannings and attacks, penetration tests.
- Odyssey Technologies
- Specialises in architecture design, implementation, and management.
- PacketDefense
- Security information and news portal with emphasis on network and BS7799 developments.
- password-find.com
- Offering password recovery service for Excel and Word files.
- PC Guardian
- Designs and develops data encryption software, access control solutions, and physical security devices. Serves large companies, agencies, and universities worldwide.
- Persay
- Advanced voice and speaker verification and authentication systems for remote services.
- PGP Corporation
- Helps companies secure e-business operations through firewall, encryption, and intrusion detection.
- PolyCommerce
- Develops strategic eBusiness solutions for both Fortune 500 companies and electronic start-ups, including information and network security, IT practices, and Internet marketing.
- Psystar Corporation
- Offers open computing products and open gaming systems, as well as communications, surveillance, and network management products and services.
- Qualtec Data Products
- Manufactures PC and business security products. Included are PC theft deterrants; heavy duty data security; and accessories.
- Rainbow Technologies
- Provides security technology including SSL-VPN secure remote access, VPN and web security appliances, identity management, authentication tokens, and software protection dongles.
- Rainfinty
- Provides performance and availbility to Internet applications, such as firewalls and VPNs.
- Recourse Technologies, Inc.
- Offers a secure deception system that enables an organisation to contain and control attacks upon their networked resources.
- Red Bull Technologies
- Reseller of best of breed security solutions and services to address the full threat spectrum to networks, hosts, and wireless devices.
- Red Iron
- A PCI compliant, end-to-end software solution to secure consumer data for retailers with Windows-based systems.
- RSA Security
- Develops and markets platform-independent software developer's kits, end-user products, and provides comprehensive consulting services in the cryptographic sciences.
- RUSecure
- Provides online threat alerts and appropriate responses, linked security policies, and online training.
- Safe Data System
- Security products that verify the identities of computer systems and network users and prevent unauthorized access to company resources.
- SafeBIZ
- Offering peace of mind to consumers and increased traffic and sales to businesses.
- SafeNet
- Developer and manufacturer of enterprise network security solutions. SafeNet uses encryption technologies to protect communications, intellectual property, and digital identities, and offers a full spectrum of hardware, software, and chips.
- SearchSecurity.com
- Directory with a focus on enterprise computing security. Targeted searches, relevant content links, editorial insight, daily industry news, and weekly technology tips delivered via email.
- Secure Net
- Offers solutions for Internet applications, remote banking, and data critical activities. Experienced with smart card technology and firewalls.
- Secure Works
- Network security monitoring and response service.
- SecureHQ
- Specialises in security products and services, such as firewalls, intrusion detection, scanners, and more.
- SecureLogix Corporation
- Offering network and telecommunication security products, consulting, and training.
- Securify
- Consolidates network security infrastructure helping enterprises interoperate with, reinforce, or replace obsolete security point products.
- Security Audit Shop
- Provides checklists, plans, resources, and information for internal audits.
- Security Metrics
- Allows users to check their system security over the Internet.
 Shoghi Communications
- Provides services for defence forces, government agencies, financial institutions, and the IT industry.- Shufro Security
- Software House
- Developer and distributor of advanced card access and alarm monitoring systems for commercial, government, banking, and university facilities, world-wide.
- Spectrum Systems, Inc.
- Seeks to assist customers with network and information management and protection.
- Sperrin Networks
- Offering security policy consulting in addition to hardware and software firewall solutions.
- Spyrus
- Manufacturer of PCMCIA crypto cards, security libraries, and secured applications.
- Surety Technologies
- Surety helps customers detect tampering or inadvertent altering of their electronic data.
- Sxip Identity
- Company hoping to provide the online mechanism for authenticating and managing real-world user-centric identities.
- Symbolic
- TECSEC
- Develops security solutions for customers ranging from consumers to defence contractors.
- TriGeo Network Security
- TriGeo offers enterprise security management as well as other services including intrusion prevention, endpoint security, and GLBA compliance.
- TruSecure Corporation
- Provides managed security products, services, research, and publications.
- Trusted Computer Solutions, Inc.
- Specialises in the development of trusted solutions to meet Department of Defence and commercial multilevel security requirements.
- USSR Labs
- Develops software anti-piracy tools, and offers security services.
- Utimaco Safeguard Systems
- Products include security hardware and software for access control, encryption, and challenge response.
- Vasco Data Security
- Remote access security.
- VPNcon
- Contains information on VPNs including conventions and exhibitions.
- WatchGuard Technologies
- Provider of Internet security products and firewalls. Products include the LiveSecurity System, and FireBox.
- Watchguard Technologies
- Provides a wide range of security features to fit any organisation's budget.
- WheelGroup Corporation
- Specialises in network-based intrusion detection and a provider of original solutions to complex network security problems.
- WiKID Strong Authentication System
- Provides a two factor authentication system as an alternative to more expensive and problematic hardware solutions.
- Windermere Information Technology Systems
- Providing technical support for information assurance.
- ZipUnlock.com
- Provides information, software reviews, and downloads for recovery of WinZip and Zip passwords
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