launched from overseas, are becoming increasingly sophisticated. >> they learn as they go, just like you and i. it's their job. >> it's like a virus. it just spreads. it doesn't stop until the consumers stop falling for the trick. >> reporter: experts say to avoid being scammed, examine those web sites closely. look for misspellings, mistakes in grammar, links that don't work, and above all, take your time. being in a holiday rush could wind up costing you some money. tony. >> dokoupil: yeah, think it can't happen to you. it can. good tips there, anna. thank you. there is much more news ahead , but we'll be right back on the "cbs evening news." they may not be able to take just anything for pain. that's why doctors recommend tylenol®. it won't raise blood pressure the way that advil® aleve® or motrin® sometimes can. for trusted relief, trust tylenol®. the airport can be a real challenge for new homeowners who have become their parents... okay, everybody, let's do a ticket check. paper tickets. we're off to a horrible start.