Israeli cybersecurity company Coronet has released a report on the threat to travelers using WiFi at airports across the United States. Major airports are ranked by threat level, and recommendations are provided for mitigating malware and eavesdropping risks to personal electronic devices.
My personal advice is to always, always, always use a VPN when connecting to ANY public WiFi network. This will encrypt your connections to a secure “exit node” so any middleman eavesdropper will be unable to decipher your activity.
Beware – WiFi pineapple’s are relatively cheap, and easy to use. Legitimate uses include penetration testing and network diagnostics, but for about $100 bucks, even a relatively unsophisticated hacker can intercept and read all of your non-encrypted communications. Public WiFi networks are especially vulnerable.