Juice jacking means using a public USB port or a planted cable to push malware onto a phone or pull data off it. The FBI's Denver office warned about it in April 2023 but said no specific incident prompted the post. The risk is plausible, widespread cases are not documented, and avoiding the port costs almost nothing.
What the FBI Denver office said
On 6 April 2023 the FBI's Denver office posted a general alert, reported by CBS News on 12 April. It advised people to avoid free charging stations in airports, hotels and shopping centers, because criminals have found ways to use public USB ports to install malware and monitoring software. It told people to carry their own charger and cord and use an electrical outlet.
The office said no specific incident prompted the alert.
What experts told reporters
The CBS report quotes several voices with different views:
- One editor said credit card skimming is a more likely risk than juice jacking, citing a lack of hard evidence of widespread cases.
- A technology journalist said it may be relatively uncommon but is a fairly easy, low cost hack, especially in airports.
- A security researcher said unreported cases are likely, since victims may not know they were targeted.
The article also cites a 2022 report finding USB based threats rose to 52% over four years. That figure covers USB threats generally, not confirmed juice jacking.
Myth versus fact
- Myth: Public chargers are routinely used to hack travellers. Fact: We found no documented widespread cases in the sources we read, only warnings that it is possible.
- Myth: The risk is nonsense. Fact: Plugging a device into an unknown data capable port is a trust decision. Modern phones ask before allowing data transfer, but you should not rely on every user answering correctly under stress.
- Myth: A charging cable is just a wire. Fact: A cable can carry data, and that is why a charge only cable or data blocker exists.
The last point is general knowledge, not drawn from the FBI post, so treat it as background.
Cheap habits
- Carry your own wall adapter, short cable and a small battery pack.
- Use a power outlet rather than a USB port in a seat or kiosk.
- Do not use a cable you found or were given. Conference giveaways count.
- If a phone asks whether to trust a computer or allow data access after you plug in, say no.
- Keep the phone updated, because many protections are patched through updates.
Our conference travel checklist puts this next to the rest of a trip's setup.
Where the real risk is
For most executives, the bigger travel risks are lost devices, phishing during the trip and fake Wi Fi or QR codes. Spend your effort on those first. See is public Wi Fi safe.
Quick check
Did the FBI cite a specific juice jacking incident?
No. The Denver office said its April 2023 post was a general alert, not prompted by an incident.
What is the simplest fix?
Bring your own charger and cable and plug into a wall outlet.
Sources
Last reviewed: 19 October 2026.
