Question on Hacking

[Flammey]

I'm not sure if this area is the right place for this, but it's better than any.

If I have hacking (the first cert), what am I able to hack. So far, I've been able to hack Medical terminals, doors faster, have not seen any difference in CC hacking, and when my vehicle got hacked, and the vehicle next to mine (The same vehicle as mine, Basalisk,) I was able to hack it back.

I guess my question is, with the first hacking cert, what are you able to hack? Can you hack any vehicle with the first hacking cert? Or just vehicles you have certs in? Do I need Advanced Hacking to hack every vehicle in the game?