F-Secure Corporation STOCK EXCHANGE ANNOUNCEMENT 23.8.2010 SHARE REPURCHASE 23.8.2010 In the Helsinki Stock Exchange Trade date 23.8.2010 Bourse trade BUY Share FSC1V Amount 5.120 shares Total cost 11.116,60 EUR Average price/ share 2,1712 EUR Highest price/ share 2,20 EUR Lowest price/ share 2,11 EUR F-Secure Corporation now holds a total of 2.708.482 shares including the shares repurchased on 23.8.2010. On behalf of F-Secure Corporation Nordea Bank Finland Plc Petri Simberg Julius Summanen