I&#x27;m having a very hard time imagining there exists even a single program out there that depends on being able to read the memory contents of a program that ran before itself.<p>I bet it comes down to driver developers never even thinking that this could be a security issue before people came up with the concept of running unauthenticated 3d accelerated software (i.e. javascript+webgl from the network in a browser) - &quot;what do you mean security, the user could just have taken a screenshot at any time. why should we waste precious FPS clearing buffers when the program will fill in its own textures before drawing anything&quot;.