Avoid shared computers and networks
If you're banking on a shared computer, you're putting your account at risk. This includes Internet cafes as well as your computer at work.
"When you're done, log off your banking site if you do use a shared computer," Vamosi says. "If you're surfing to the next page, you're still on the banking site. Someone can gain access to your account."
Tapping into outside Wi-Fi networks is also dangerous. Vamosi warns against using Wi-Fi networks in airports, cafes, trains or taxi cabs, with some exceptions. "If you're given a password to get onto a wireless network, you're safer," he says. At hotels, opting for a wired connection is safest, he says.