SSH COMMUNICATIONS SECURITY CORP STOCK EXCHANGE RELEASE DECEMBER 23, 2008 AT 9:00 A.M. SSH OPTION CERTIFICATES EXERCISED FOR SHARE SUBSCRIPTION According to the I/2003 option program, 5166 shares were subscribed for using class A option certificates, 11 668 shares were subscribed for using class B option certificates and 16 666 shares using class C option certificates. The subscription period for shares with I/2003 A option certificates started May 1, 2005, with 1/2003 B option certificates started May 1, 2005 and with I/2003 C option certificates started May 1, 2006. The issue of the I/2003 Stock Option Program was approved by the Annual General Meeting of April 29, 2003. The corresponding increase in the share capital, in total EUR 1.005,- was registered in the Finnish Trade Register on December 23, 2008. As a result of the increase, the share capital of the company is EUR 857.513,25 and the total number of shares 28.583.775. The holders of the new shares are entitled to all shareholders' rights from the registration date December 23, 2008. The new shares will be listed on NASDAQ OMX Helsinki Ltd. together with the other shares as of December 29, 2008. Helsinki on December 23, 2008 SSH COMMUNICATIONS SECURITY CORP Pekka Rauhala General Counsel Further information: Pekka Rauhala, General Counsel, tel: +358 20 500 7522 Distribution: NASDAQ OMX Helsinki Ltd. Major Media www.ssh.com