It is not worth the risk. Encrypt those - you don't have to choose a particularly secure key or encryption scheme, just one that's good enough that it's computa

It is not worth the risk. Encrypt those - you don't have to choose a particularly secure key or encryption scheme, just one that's good enough that it's computational infeasible for Google to brute-force that scheme+key size for every one of its users. Actually, it might be a good idea to encrypt everything on Google Drive - I wouldn't be surprised if they analyze your files and use the results to augment their internal profile about you (or, even if they don't now, they could very easily do so in the future - remember when they scanned your emails to target ads at you?).