Be careful of private information on public wifis. NY Times offered an interesting article yesterday about the dangers of travelers using the Internet in the airports or other public wifis. For anyone who travels, this is worthy caution to make sure you are properly guarding your info.

“Someone may have some software on their computer that allows them to look at all the wireless transactions going on around them and capture packets that are floating between the laptop and the wireless access point,” he said.

These software programs are called packet sniffers and many can be downloaded free online. They are typically set up to capture passwords, credit card numbers and bank account information — which is why Mr. Vamosi says shopping on the Web is not a great way to kill time during a flight delay.

“Where I’d draw the line is putting in your bank account information or credit card number,” he said, adding that checking e-mail messages probably is not that risky, but if you want to be cautious, change your password once you are on a secure connection again.

Using business center computers also involves dangers:

Last fall, InfoWorld magazine published an article about a security researcher who managed to collect more than 100 passwords, per stay, at hotels with lax security (about half the hotels she tested).