

I would assume for remote monitoring of some kind. You can imagine an automated system monitors 1000’s of freezers and helps control their temperature/performance.
That said, clearly this shouldn’t have been on the open internet, assuming that’s what happened. It could also be an inside job and/or unhappy former employee
I’m just guessing 🙂
About defrosting, it could be that you want to turn the defrost on to literally remove frost without thawing the whole freezer.
Just saying there are reasons why you might want to monitor remotely and possibly be able to take action remotely.
Then again maybe this was a feature that was turned on/left on by mistake