I think that it's just random "luck".Out of curiosity, what is the criteria to get hyperdicted?
The first time that I got hyperdicted I was in my Explorer Asp and I had visited the double Barnacle site at Pleiades Sector OI-T c3-7 A 6. I was then heading to the huge site at Hyades Sector AQ-Y d81 C 2. The route there took me through Pleiades Sector YA-N b7-2 and then Aries Dark Region IX-S b4-1, and it was this 2nd jump to Aries when it happened to me.
This was a full disable/scan and a friendly Thargoid as I had no cargo and was unarmed... well it was friendly until I flew into it taking pics with the external camera and then I had to leg it!
The second time, I was running a Palin mission to return 2 tonnes of Bio matter. I'd collected them from the Thargoid scout at HP 17125 and was heading back to Maia via Pleiades Sector IH-V c2-14, this time in a Python set up for exploration. The hyperdiction happenen on the jump from Pleiades to Maia. I didn't want to risk a scan that time and managed to boost immediately after hyperdiction - by the time power returned, the Thargoids had already given up and left the system.
I've run those missions "a few more times" now (cough) in a DBX that can scoop straight from the ground and 1 jump back from the scout ... and haven't been hyperdicted again 1 jumping, nor have I when running data missions over to Celeano before jumping to HP 17125.
I did try hopping around the region a few times before 2.4 but never managed to trigger it when I'd wanted it to happen!
Might give you a couple of systems to jump between to see if it triggers for you though:
Pleiades Sector YA-N b7-2 -> Aries Dark Region IX-S b4-1
Pleiades Sector IH-V c2-14 -> Maia