The security on my computer says network traffic from (some IP address)
matches the signature of a known attack. does this mean someone tried to hack
into my computer and if so, how do i find out who it was?
Yes it does, and no it doesn’t.
And finding out who it was it not only difficult, but probably pointless as
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While it’s certainly possible that someone is attempting to break
in to your computer, it’s really not very likely. By that I mean that unless
you present some kind of lucrative target for some reason, there’s not likely
to be someone out there trying to get at you specifically.
What’s more likely is that:
Most viruses work by trying to infect other machines once they’ve infected
yours. They do that through a number of different ways, but the important thing
here is that they’re simply machines, and they’re dumb. They’re just looking to
infect anyone that they can reach.
If you were to actually look at the traffic on the internet you’d see that a
great portion of it is exactly that: infected machines randomly or methodically
attempting to reach out and infect other machines.
The great news here, is that it sounds like you already have that in place.
It’s likely your firewall that’s reporting the intrusion attempt.
You could try to track down the infected machine trying to infect you, I
suppose. The problem is that with only the IP address you can only get as far
as the ISP that provides that machine’s internet connection. That’s not going
to do much for you.
In your shoes, I’d ignore it, knowing that my firewall was protecting me,
and get on with my life.