Some 70 percent of online adults responding to a new Business Software Alliance (BSA) study conducted by Harris Interactive said security concerns did not prevent them from making purchases online - and 38 percent said spent more online in 2005 than they in 2004, reports InternetNews. Nine of ten said they did online shopping from home; 26 percent said they did at least some online shopping while at work.

Some 88 percent said they have anti-virus protection on their PCs, 78 percent have anti-spyware software, and 77 percent reported having a firewall.

More than half (56 percent) said they were very or extremely confident that they were protected from computer viruses, credit card fraud (50 percent), identity theft (46 percent) and spyware (41 percent).

Internet security most concerned older Americans (55 and older): 31 percent said they were extremely or very concerned about security.