The upcoming Firefox 3.5.3 and Firefox 3.0.14 releases, currently in beta, will check the version of Adobe Flash plug-in installed in the browser and warn the user if that plug-in is out of date. Johnathan Nightingale, "Human Shield" (Security Lead) at Mozilla confirmed the new security feature to The H and said that the Flash version check was part of a wider commitment to "protect users from emerging threats online".
Mozilla is the first browser company to recognize that Adobe's Flash Player needs regular checks and updating. It is estimated that 80 per cent of users surf with a vulnerable version of Adobe's plug-in. A zero day vulnerability discovered in Flash Player in July took almost a week to fix.