I've seen an agent autonomously upload a jar to a random file host, in an attempt to be helpful as ssh between my host and it's VM wasn't working (which was trivially fixed, but I guess it was in a hurry)

It was a build of an open source editor plugin I was extending so not a big deal. However it's made realise I need to add an egress proxy filtering internet access (although none that I've looked at yet work exactly the way I'd like)