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To my surprise, I was interdicted by a fully engineered fer-de-lance while having an empty cargo hold. I was subsequently shot to 5% hp in a few seconds and left without a working frame shift drive, forced to self-destruct.
A few more things, perhaps.
1) you had no need to self destruct - on the same panel, there is the "reboot&repair" option, which would have restored all your modules into a "barely functional" state. Takes a few seconds to run through, and you may have to run it several times until all of your modules are back up again - and even then, a low health FSD might fail on you several times before you actually can make it into SC or hyperspace.
2) ShinDez is known for this, as is San Tu. As everyone in ShinDez is Elite (in some way), it is simply assumed by a lot of people that you know what it means to fly in Open and can defend or otherwise hold up yourself. If you don't want this, simply don't go into ShinDez in Open. San Tu and especially the installation there is the inofficial PvP hub, I wouldn't give too much on the Inara rating - especially since San Tu is (or at least was the last time I checked) an Anarchy system.
3)Your assailant only wanted to spar - he left you (barely) alive, theoretically able to get yourself to a station and repair. You weren't a newbie, as you were able to enter ShinDez. Not quite the same league as the wannabe PvP aces lurking e.g. in Deciat and attempting to kill newbies.
Bounty hunters going after them? What are you offering?
In-game, they will receive a (small) bounty and, if they kill you, notoriety. There are some known criminals out there with several millions of bounties on their head, but the payout to another player is limited (I don't know the number, I don't go after them). This pulls in NPC bounty hunters and, if they are sufficiently bad, a special force called ATR which are less laughable than the regular security forces.
There are also players who hunt the worst offenders (or anyone with a bounty) - but here, we get again the problem: what are you willing to pay?
If it concerns a specific player, you'll need to take this over into Discord (or maybe reddit), as "naimng and shaming" is
NOT permitted in this forum.