Kelson writes to mention Microsoft, Mozilla, Opera and Google took the stage this week at the Web 2.0 expo and in addition to discussing pressing issues have declared their intent to avoid another browser war. All the panelists agreed that security was the largest concern currently facing browser developers. "Brendan Eich, the chief technology officer at Mozilla, said that security was hard and always will be. 'I don't think we should take security lightly; it's an end-to-end problem and we have to step outside the current model to win on this front,' he said. For his part, Chris Wetherell, a software engineer at Google, said one of the scenarios that kept him awake at night was offline access to the browser and what that meant from a security perspective, particularly on the user-to-user front."