Published: Nov 30, 2010 4:57 AM EST
Updated: Nov 30, 2010 1:58 AM EST

BONITA SPRINGS, Fla. - Strong sales were being reported Monday as holiday shopping moved online for "Cyber Monday"; but computer experts are warning this is also the time of year to watch for online cons.

"In today's world, its very easy to pick up traffic off the internet," said Jack Voth, who's Bonita Springs-based company, "The Client Server," works every day to keep computers secure.

He says the holidays-- and holiday shopping-- are prime time for online cons.

"I wouldn't buy anything from, say, Bill and Ted's Excellent Retail, you want to make sure it's a reputable website," Voth said.

Voth says there are several steps shoppers can take to stay secure on the internet.

"I highly do not recommend saving passwords," he said.  Keeping your password on your computer makes it easier for anyone with access to log on with your information.

"Don't use your bank card, use a credit card.  Don't use your bank card because they'll tap your account quick if its a scam."

And Voth says there's a big online shopping mistake many people make without knowing; allowing websites-- even well-known ones-- to store your credit card and contact information on their servers.  It could mean potential problems if someone hacks into their computers.

"I know its easy to do that way, let Amazon store 3 or 4 credit cards in there, its very easy and convenient, they have that one-click shopping, but its a risk."

When in doubt, Voth says common sense and well-known names are likely your safest bet.

"Go to one of the big retailers.  They spend a lot of money securing their sites down."