For the modern nomadic worker, few things are more enjoyable than heading to a cafe, ordering a cappuccino and firing up the laptop to get some work done. As far as anyone you’re e-mailing knows, you’re at the office.
Unfortunately, few things expose your work to greater security risks than latching onto a public Wi-Fi service. Most people don’t realize the risks, and even fewer have the ability to perform the geeky tasks that would fix it.
Computer criminals can “sniff” the traffic in a cafe, or set up a fake hot spot that you might innocently log into. When that happens, watch out: Everything you type goes directly to the host computer, known as an “evil twin.” In that scenario, as soon as you get into your online bank account, the evil twin is ready to grab the password.
The best advice for avoiding those situations is to tap only into wireless connections that you trust. Be wary of connections with names such as “free public wifi.” Ask at the cafe for the name of its network. Even then, be aware that someone sitting next to you could have set up a network with the same name, such as “Starbucks,” that you could tap into unwittingly.
Most security-savvy travelers assume the worst and don’t do anything that could cause trouble if it fell into the wrong hands.
“Every packet that goes out over the Internet is observable” by a tech-savvy hacker, says Brett Levine of San Francisco.
Nonetheless, Levine, a vice president at Internet video start-up Dovetail, remains a dedicated cafe worker. He spoke from Hong Kong, at the end of a business trip in which he communicated with “nothing but my laptop. The only connections I’ve had were in hotel lobbies or cafes. I’m sitting here with my ramen noodles.”
He just makes sure that…