When I bought mine in 2015 the media was covering the high rate of thefts.
I bought a Diskloc and hoped for the best. I heard about moving ports etc, but that was only at special request or something.

2 Years later, has anything changed? Has any sofware be changed to make them less vulnerable for instance?

There was some kind of lock recall around that time - not entirely sure what changed.

The press talk these things up, but I don't recall anyone posting on here that they'd had any trouble, or even know of anyone who had trouble.

Some things are out of your control & just not worth worrying about IMHO

There was a software upgrade which meant that the OBD port could no longer be used to create a new key. I was asked to take mine to the dealer with both keys for the upgrade.

Hmmm. What year is yours - dealer never mentioned that to me at the service. I'll ask next time anyway.

If yours needs doing, then my tip is to buy a spare key from eBay - they don't cost much - when I had mine done they just reprogrammed all 3 keys as part of the recall, so I have a spare (albeit without the right blade inside)