Just following from another thread that went off topic discussion, where is the mac with malware and viruses? What is the real risk to OS X? and how can problem be spotted if they are hidden? I travel a lot with my macbook, and need to connect to many strange wifi networks for work and emails. It always sits at the back of my mind that some strange network could get access. At home/work I have a trusted firewall and NAT router. I've not got any virus protection the mac, and for all that people say PCs are high risk, mine in the office all have antivirus (norton on some and trend on others). Usually it's quite easy to see malware active on a PC, and find it, does the mac show similar symptoms?, or are the folder all protected against that? I've often wonder if safari private browsing is safer when on foreign networks for sites you don't know. Usual sites are fine, but in China for example, many usual site are blocked, or rerouted, or even need to search local sites for information (because google is blocked). Does private browsing protect the mac? Can the malware/virus still get through or is everything deleted when you close the window?