Just a brief update to let you know that we're currently in the progress of getting Valve Anti Cheat (VAC) enabled on the PC version of GRID 2.
We're currently making the required changes to the game and working with Valve to get everything in place. Once our testing is complete we'll be patching the PC version of the game soon and once complete will be looking at enabling VAC shortly after.
We're hoping this will be another step towards making your online experience a better one :)