You've seen the headlines: the FBI and TSA say don't plug your phone into public USB ports. The technique they're describing — "juice jacking" — is real. The risk to an up-to-date iPhone is small, and it's worth understanding why, because the honest answer is more useful than the scary one.
Juice jacking is a real, demonstrated attack: a modified USB port or cable that tries to pull data from your phone or push malware onto it while it charges. It's been shown at security conferences since 2011. But after more than a decade of warnings, there are no publicly documented, confirmed cases of a traveller being compromised by a public charger. The FBI's 2023 warning and the TSA's 2025 one are precautionary — sensible advice about a possible attack, not a response to a wave of victims.
Use your own charger and a wall outlet, or a power bank. That advice is correct, it's free, and it makes the whole question moot. But if you've ever plugged into an airport USB port and are now worried — the odds that anything happened are very low, and lower still if your iPhone is up to date.
USB carries power and data down the same cable, which is the whole premise of the attack. But an iPhone doesn't hand over data just because something asks:
The honest caveat: this protection depends on your iPhone being updated. An old iPhone on an old iOS has weaker defences, and that's the one where the warnings genuinely bite.
You'll read that a compromised port can "steal your photos and passwords in seconds" or "install tracking software while you grab a coffee." Against an updated iPhone that hasn't been unlocked and told to trust the port, neither happens. You'll also read about "video jacking" — hidden cameras in charging kiosks recording your screen. That's a real shoulder-surfing risk, but it's about what you type and view at the kiosk, not about your camera roll. And a public charger cannot see photos on a phone that isn't sending them.
The gap between "demonstrated at a security conference" and "happening to travellers at airports" is wide, and nobody selling a forty-dollar privacy gadget wants to explain it.
So why is this on a camera-roll app's website? Because the charging-port scare is a good example of a privacy risk that's smaller than it sounds — and it's worth being clear about which risks are real. A public USB port almost certainly can't see your photos. A person holding your unlocked phone can. A border officer with your device can. The trade-in shop, the family member scrolling for one picture, the old backup on an old laptop — those are the real ways the photos in your camera roll get seen by someone else.
Worry about the phone in someone's hand, not the port on the wall.
See also: Who can see my photos when I hand over my phone? · Can border officers search my phone? · What's in my camera roll that I've forgotten?
Where RollGuard fits. RollGuard doesn't protect your phone from chargers — nothing on your phone needs to. It does the thing that matters for the real risks: it scans your camera roll, entirely on your device, for the photos you'd rather not have there when someone else is holding it — identity documents, payment cards, screenshots of passwords, sensitive images — and lets you keep, hide, or delete each one.
Last updated 18 August 2026. Security research moves quickly and iOS defences change with each version; the specifics above reflect publicly reported findings as of this date.