Yes...like preventing people from accessing it...
ROFLMAO!!!!
If the connection owner has a good router, and probably does if the signal is good enough for Ross to tap in, then he has a nat firewall in the router. May or may not be setup correctly.
Probably uses Windows firewall too, and maybe even a third party.
Then Ross is no doubt using a firewall and 5 malware/av apps...(lol...sorry, Ross..).
A firewall/anti virus is only as good as the person who sets it's rules (sets it up).
This is where common sense and experience comes in.
If you download and install something, thinking it's ok, but it isn't, you have, by installing it, allowed it certain accesses.
Some apps can't be trusted and look safe until they're in your system.
Then, there are some apps, like Spybot S and D, for instance, that mark tracking cookies and such as malware.
All the malware/anti virus apps require the user to know some stuff.