AboveNet's Secure Alliance Program Offers Corporate Customers Added Flexibility in Enhancing Their Security and VPN Solutions.

SAN JOSE, Calif.--(BUSINESS WIRE)--Aug. 25, 1999--

Charter Members Include: Cylink, Loral Orion, Network Alchemy,

Net Sentinel, Nokia, Nemesis Technologies, Tripwire Security

Systems, and VeriSign

AboveNet Communications Inc. (Nasdaq:ABOV), the architect of a global one-hop network that brings together high-bandwidth content sites, ISPs, and Application Service Providers in centralized co-location facilities, today announced its Secure Alliance Program.

Charter members of the alliance include Cylink Corporation (Nasdaq:CYLK), Tripwire Security Systems, Inc., Loral Orion, a subsidiary of Loral Space & Communications Ltd. (NYSE:LOR), Network Alchemy, Inc., Netsentinel, Inc., Nokia (NYSE:NOK), Nemesis Technologies, and VeriSign, Inc. (Nasdaq: VRSN).

These "best of breed" providers of security products and services will enable AboveNet's clients to implement solutions that are designed to meet their specific security requirements.

In a related release today, AboveNet introduced its Secure Services which include: Secure Vault for high level physical security, Secure IP Response for filtered network access, and Secure Connectivity for high-performance low-latency bandwidth that enables the implementation of virtual private networks (VPNs) with global reach.

Spanning the spectrum of security-related products and services, the Secure Alliance members offer solutions for authentication, security auditing, intrusion detection, firewalls, dedicated access, and VPNs as well as consulting services and system integration.

In selecting members for its Secure Alliance, AboveNet chose technology leaders with a demonstrated ability in providing quality security solutions.

These providers give AboveNet's Secure Services customers a choice of quality, value-added products and services for enhancing and extending the level of security on their Internet equipment and networks as well as implementing VPNs. With its Secure Alliance members, AboveNet delivers a national reach for VPNs with performance of up to 300 Mbps of 3-DES encryption.

The Secure Alliance Program is an extension of AboveNet's open business philosophy. While focusing on its core competencies, AboveNet maximizes client options through technology relationships.

"The expertise of our Secure Alliance members complements AboveNet's core competencies in facilities, network connectivity and managed services," said Sherman Tuan, AboveNet Founder and Chief Executive Officer. "Together with our alliance members, AboveNet provides premium security for corporate IT assets."

About AboveNet Communications Inc.

AboveNet Communications Inc. is a leading provider of Internet connectivity and co-location solutions for high bandwidth and business-critical applications.

AboveNet, headquartered in San Jose, is the architect of the Internet Service Exchange (ISX) -- a world class network that provides co-location services and Internet connectivity for Content Providers, ISPs and Application Service Providers (ASPs). The AboveNet Global One-Hop Network is designed to deliver fast, scalable and reliable connections to the Internet and improves the Internet experience for end-users.

With its Tier 1 status and ISO 9002 certification, AboveNet is seeking to serve the global community of the Internet. For more information on AboveNet and its service offering call 800/475-2733 or visit the company's Web site at www.above.net.

The statements contained in this press release that are not purely historical are forward looking statements within the meaning of section 21E of the Securities Exchange Act of 1934, as amended, including statements regarding the company's expectations, beliefs, hopes, intention or strategies regarding the future. Factors that could cause or contribute to such differences include risks related to the company's services, including network scalability and Internet connectivity, the ability to maintain and increase peering relationships, intense competition, and other factors and risks discussed in AboveNet's documents filed from time to time with the Securities and Exchange Commission, including AboveNet's most recent Forms 10-K and 10-Q.

Note to Editors: AboveNet, Internet Service Exchange, ISX, and AboveNet Global One-Hop Network are trademarks of AboveNet Communications, Inc. All other company or brand names may be trademarks of the respective companies with which they are associated.