Network-1 Announces Agreement with Siemens Business Services

SBS to Include CyberwallPLUS(TM)Software as Part of Its “Best-of-Breed” Technology Solutions Portfolio

WALTHAM, Mass., Jan 14, 2002 (BUSINESS WIRE) –Network-1 Security Solutions, Inc. (Nasdaq: NSSI), a leading developer of next generation distributed firewalls with intrusion detection and prevention capabilities, announced today that the Company has entered into an agreement with Siemens Business Services (SBS), one of the world’s leading providers of e-business solutions and services. As part of the agreement, SBS will include Network-1’s CyberwallPLUS family of intrusion prevention software in its “Best-of-Breed” technology solutions portfolio, and provide integration and support services for CyberwallPLUS through SBS’ professional services and security practice.

“Our customers are asking for recommendations on how to address their enterprise security problems. We provide comprehensive, integrated security solutions that address all elements of network infrastructure security risk,” said Benno Zollner, senior vice president, consulting services for SBS. “We envision Network-1 being an important component of the `Best-of-Breed’ technology solutions. Through this agreement, our customers will receive the best caliber security for their Windows clients and application servers, as well as the services required to integrate and support these technologies in their day-to-day operations.”

“This is a very important relationship for Network-1,” said Murray Fish, president and CFO of Network-1. “Siemens is a leader in outsourced IT for Windows desktops and servers. This agreement will give its customers easy access to very powerful security technology on every desktop, laptop or applications server that is at risk from attack.”

The CyberwallPLUS family of intrusion prevention solutions for Windows desktops, laptops and servers is the latest generation of host security software from Network-1. CyberwallPLUS integrates a powerful range of security techniques to actively detect and block intrusions. This unique solution provides the fine-grained access control, bi-directional protection and stateful packet inspection typically found only in high-end perimeter firewalls, combined with powerful intrusion detection and prevention capabilities. This combination provides the highest level of host protection from both Internet and internal user attacks. CyberwallPLUS’ policy management enables detailed security policies to be formulated, distributed, and monitored, maximizing IT security resources.

About Network-1 Security Solutions, Inc.

Network-1 Security Solutions, Inc. (Nasdaq: NSSI) is a leader in server and workstation intrusion prevention software, combining the benefits of firewalls and intrusion detection directly on critical servers, desktops, and mobile computers. Distributed intrusion prevention protects against abuses by those with “insider access” and provides multiple layers of defense against breaches by outsiders. Security conscious organizations are using CyberwallPLUS as an integral component of their “defense in depth” security strategies. For additional details about the Company and its products visit http://www.network-1.com, or contact 800-NETWRK1 or 781-522-3400.

Certain of the above statements contained in this press release contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Actual results, events and circumstances (including future performance, results and trends) could differ materially from those set forth in such statements due to various factors, risks and uncertainties, including but not limited to, risks associated with the Company’s future growth and operating results, the uncertainty associated with obtaining sufficient financing, the uncertainty of market acceptance of the Company’s products, technological change, competitive factors and general economic conditions. Except as otherwise required to be disclosed in periodic reports required to be filed by companies registered under the Exchange Act by the rules of the Securities and Exchange Commission, the Company has no duty and undertakes no obligation to update such statements.

CyberwallPLUS is a trademark of Network-1 Security Solutions, Inc. All other product, trademark, company or service names mentioned are the property of their respective owners.

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