No, typically Sony is hostile towards hackers. Being ignored is the best response from them. I think after the bad press for PS3 and psn hacks, Sony hired security consultants to secure the Vita. They did so many things right that frankly it's suprising. Not everything rolled over into the ps4 though so the vita is more secure than the ps4.
They famously sued geohot (and others) for their work on the PS3. [0]