Originally posted by grapplehoeker:

Originally posted by HAHAHuH?:

It isn't your home that is attacked... it is you.

https://steamcommunity.com/sharedfiles/filedetails/?id=2424562622

sorta... hostile mobs from the raid will also attack mobs from other environments. so if for instance a bunch of surtlings show up at your black forest base, those surtlings are far more likely to end up attacking every greydwarf and deer in your vicinity than actually attacking you or your walls.
i expect that the event game mechanic will be overhauled and expanded in coming updates.