Hello,
several people are having issues with the current version of smart security, as it is crashing the Dota 2 Reborn Beta on startup. I found this post https://forum.eset.com/topic/1576-eset-7-interactive-firewall-problems-with-some-games/#entry9468
which sounds like it could solve the matter, unfortunately, it's not specific enough for me, to fully understand how to enable the logging. I tried and nothing showed up, so my game still crashes when I launch it, unless I disable the personal firewall which is especially annoying, because I only disable it for an hour and when I get end a game, the game crashes and I have to end it via the task manager.
Anyways, please explain more detailed or fix your ######, my license runs out in two months. ;P
Edit: Workaround until this is fixed: deactivate your personal firewall before starting dota2.