F-Secure's information security products for Sonera Plaza's Internet clients

Helsinki, Finland - August 28, 2001

F-Secure Corporation (HEX: FSC), a leading developer of centrally managed security solutions for the mobile enterprise, and Sonera Plaza today announce an agreement with F-Secure Online Solutions to bring F-Secure's automatic updating of information security to Sonera's Internet connection clients.

The service, called Sonera Plaza Information Security, offers anti-virus and firewall solutions that are based on F-Secure's products. Sonera's clients can order the service from the Internet client's service management at https://personal.inet.fi.

"The need for firewalls has grown rapidly, as the number of Internet users and faster connections have increased. We want to offer our clients quality products for secure use of the Internet. Sonera Plaza Information Security service is very uncomplicated in use, as it updates automatically" says Pasi Harkki from Sonera Plaza.

"As information security is an essential part of today's Internet world, it is important that the solution providers consider the needs of the end users, and offer them a painless way to secure their connection" says Olli Heinonen, acting CEO of F-Secure Online Solutions.

The anti-virus service is free for all Sonera Plaza's Active- and Original connection clients, as well as for their Broadband Super clients. For other clients, the anti-virus service costs FIM 20,75 (EUR 3,49) per month. For the firewall service, clients must pay a monthly fee of FIM 29,67 (EUR 7,49). The complete price list for the Information Security services can be found at http://www.soneraplaza.fi/internet/tietoturva .

About F-Secure Online Solutions (F-SOS)

F-Secure Online Solutions is a premier provider of Managed Security Solutions through service providers. The company offers managed services for anti-virus, file encryption, distributed firewall and VPN solutions. F-SOS utilizes technology from F-Secure Corporation as well as products from other leading security companies in its solutions portfolio to fill the knowledge gap between demanding customer environments and service providers, enabling much faster rollout and time-to-market for new security services. F-SOS utilizes its Security Online Center concept to deliver highly available and reliable security solutions. F-SOS was established in 2000 and holds its head office in Helsinki, Finland and is owned by F-Secure Corporation [HEX: FSC].

About Sonera Plaza

Sonera Plaza Ltd, a wholly-owned subsidiary of Sonera, is Finland's leading provider of Internet services with 253.000 subscribers and 1,5 million unique monthly visitors. Sonera Plaza aims at becoming a leading Internet transactions centre, combining e-commerce, versatile Internet banking and finance services, media and entertainment. Sonera Plaza develops its services for both wireless and fixed terminal devices. The company's proforma revenues in 2000 were about EUR 46 million.