TSA Warns All Smartphone Users—Do Not Use These Networks
Holiday season is now upon us. And as we head to airports across the U.S. and overseas, the Transportation Security Administration (TSA) has issued new warnings for all smartphone (and PC) users to stay safe and secure at airports while traveling.
The first warning plays into the controversial risk of juice jacking. This is where you're tricked into plugging your phone into a public charging socket in a hotel or mall or airport. 'So, when you're at an airport do not plug your phone directly into a USB port. Bring your TSA-compliant power brick or battery pack and plug in there.'
TSA's second warning plays into the even more controversial risk of public WiFi. Nothing irritates cybersecurity professionals more than blanket warnings about public WiFi, given that most traffic to and from your smartphone is now encrypted.
But TSA has warned smartphone users nonetheless. 'Don't use free public WiFi,' it says as one of its 'two best tips for staying cyber safe at airports while you're traveling.' That means do not connect to free airport networks as most of us do. This is especially true, it adds, 'if you're planning to make any online purchases,' and also warns 'do not ever enter any sensitive info while using unsecured WiFi.'
So, is this right? In general, public WiFi is fine — and that includes airport WiFi. As the FTC says 'because of the widespread use of encryption, connecting through a public Wi-Fi network is usually safe.' But be sure to follow those golden rules when connecting:
The mobile security specialists at Zimperium have just issued their own public WiFi warning for smartphone users 'especially during travel when vigilance is low.' With free public-WiFi everywhere,' they say, 'attackers know exactly how to strike.'
Zimperium says smartphone settings should be changed to 'block connections to public unsecured WiFi,' with 'over 5 Million Public Unsecured Global Wi-Fi networks found since beginning of 2025, with 33% of users connecting to public unsecured networks.'
Echoing TSA's warning, the team says 'during travel, these risks multiply.' And it's not just airports. 'Hotels, ride-share hubs, and cafés all offer rich hunting grounds for attackers.' It's worse overseas, but 'major U.S. cities like Los Angeles, New York, Portland, Miami, and Seattle are seeing increased mobile malware activity.'
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