F-Secure Corporation STOCK EXCHANGE ANNOUNCEMENT 27.8.2010 SHARE REPURCHASE 27.8.2010 In the Helsinki Stock Exchange Trade date 27.8.2010 Bourse trade BUY Share FSC1V Amount 20.000 shares Total cost 42.740,00 EUR Average price/ share 2,1370 EUR Highest price/ share 2,16 EUR Lowest price/ share 2,10 EUR F-Secure Corporation now holds a total of 2.755.357 shares including the shares repurchased on 27.8.2010. On behalf of F-Secure Corporation Nordea Bank Finland Plc Petri Simberg Julius Summanen