What are the dangers of websurfing without an antivirus running? To be more specific, while I understand the basics of email attachments, downloading unsafe programs etc. I was curious about other ways that you may get viruses. For example I have been to a few sites that as soon as I click on it NOD32 alerts me that something's wrong-I don't remember if it was trojans, worms, viruses-maybe it was malicious script. I remember reading something about people hacking into websites and putting malicious script onto it. Is this what was going on? Another thing I was wondering, can malware travel like a webspider (although it would be from connection to connection not site to site)? Does it ever travel/enter on it's own through open ports or does it require an action on my part downloading it in some way? On Instant Messaging can you acquire malware without opening any files etc.? I appreciate this as I just realized how much I didn't know.