This is the reality of life
I cannot find it at the moment - I had it recorded during the IETF this summer.
In one week mostly on public IP addresses, my laptop had clocked ~300MB legit traffic by doing the daily chores - email, chores, etc. In the same amount of time it has clocked > 2.4GB (yes GB) of incoming attack traffic which was dropped.
The current "security pressure" is relentless. If it took < 8 minutes for an unprotected system to be whacked on the Internet 10 years ago, it isn ow probably like < 15 seconds.
So the fact that you came to a "tower" of security breaches when you came back home from hols does not surprise me in the slightest.
This will get even more "interesting" if v6 is finally deployed and the holy end-to-end principle is adhered to. Time to run for the hills...