STONESOFT BOARD DECIDED TO SUPPLEMENT THE NEW STOCK OPTION PLAN

Stonesoft Corporation stock exchange release June 18, 2008

STONESOFT BOARD DECIDED TO SUPPLEMENT THE NEW STOCK OPTION PLAN

Stonesoft Corporation's Board of Directors has, based on the
authorization given by the Annual General Meeting on April 23, 2008,
decided in its meeting held on June 17, 2008, to supplement the terms
in paragraph II 6 and II 7 of the Stock Option Plan 2008 approved in
its meeting held on May 6, 2008. A stock option holder shall have the
same or equal rights as a shareholder in case of issuance of new
shares, options or other specific rights prior to share subscription
as well as in certain other special cases.

The supplemented terms of the Stock Option Plan 2008 in full can be
found at the company's website http://www.stonesoft.com.

Stonesoft Corporation
Board of Directors

For additional information, please contact:
Ilkka Hiidenheimo, CEO, Stonesoft Corporation
Tel. +358 9 476 711
E-mail: ilkka.hiidenheimo@stonesoft.com

Distribution:
OMX Nordic Stock Exchange Helsinki
www.stonesoft.com