First of all the PSP2 won't use Android, I don't know where you got that. It will run the Playstation Suite, which will also be available on some Android phones, but that's about it.
Second, the PS3's security was very lacklustre. The PS3 is completely cracked now because of a stupid mistake by Sony, and they can't do much about it. I don't see why you would call that good security. The only thing that protected them the first few years was the availability of OtherOS as it satisfied the majority of the hackers who could do their things with it. Once Sony removed it it didn't take long for them to crack it open.
You really believe them? Really? lol, the other OS sent them down a blind alley and when they finally made some progress Sony removed it to prevent it, it was only then that someone stumpled upon to the stupid mistake Sony made, which if they hadn't made the ps3 would have been still pretty hack proof, then once they finally did it in order to save face they said, yeah we weren't trying thats why it took so long