I have a question, What is NETBIOS? I bought Zone Alarm Pro, and it's been saying that it has blocked a NETBIOS name from accessing my computer. It's been Happening quite frequently, like once every ten or so minutes. My uncle is teaching me stuff about security, and he said it's someone trying to hack my computer, but i thought i'd ask the wonderful people of AntiOnline Does it mean that someone is trying to access my hd or could it be someone just using an ip scanner? any help(info) would be much appreciated.