I wouldn't really worry to much about it, however though I would keep an eye on the spoofing part.
I have two computers total. Connection is ADSL external modem Linksys DSL ethernet broadband router with built in firewall then firewalls on each other PC aswell. My files harddrives everything is secure so if anyone was even to 'get in' they couldnt steal nothing. Do you think I was breached? Thanks for the reply.