At 47:10, they mention that they haven't found anything evil. Ofc, this isn't hard proof, but if I trust anyone's answer, then it's theirs. I think the likelihood of it being malicious is nonzero, but small enough that I'd condemn active backdoors into the realm of conspiracy theories.
There's always the possibility of it being exploited by others, but c'mon: Basically ANY other exploit would be way easier to distribute and activate than one in the PSP.
https://www.youtube.com/watch?v=bKH5nGLgi08
At 47:10, they mention that they haven't found anything evil. Ofc, this isn't hard proof, but if I trust anyone's answer, then it's theirs. I think the likelihood of it being malicious is nonzero, but small enough that I'd condemn active backdoors into the realm of conspiracy theories.
There's always the possibility of it being exploited by others, but c'mon: Basically ANY other exploit would be way easier to distribute and activate than one in the PSP.