securom isn't the worst DRM, try the anno 2070 DRM and the origin DRM.
How those work is you're given 3 licenses, each computer is licensed.. (a RAM, CPU, HDD, or graphics swap will even use a license) and each time you install it it also uses up a license. Use your 3 licenses and you're on their support team's back trying to get them to reset it for you, knowing EA this is a gigantic royal pain in the ass, so...