Travel puts you on networks you do not know, in places where your phone is easy to lose. A few habits remove most of the risk without spoiling the trip.
What the risks look like
Fake network
A hotspot named like the café or airport, set up to capture your traffic.
Eavesdropping
On an open network, traffic that is not encrypted can be read by others.
Shoulder surfing
Someone watching you type a passcode or card number.
Lost device
A phone left in a taxi, with your accounts still signed in.
Before you leave
Update everything
Install pending updates on your phone, laptop and apps. Fixed security holes are the easiest wins.
Turn on screen locks and find-my-device
A strong passcode plus remote lock turns a lost phone into a nuisance.
Set up two-factor sign-in
See two-factor sign-in and passkeys. Make sure you can still get codes abroad.
Save backups and numbers
Photograph your passport page and keep the bank's lost-card number somewhere other than the card.
While you are away
Safer routine
- Confirm the network name with staff
- Use mobile data for banking and payments
- Use apps and sites that show a padlock
- Log out and forget the network afterwards
Riskier routine
- Joining any open network that appears
- Entering card numbers on a shared computer
- Leaving automatic joining switched on
- Ignoring certificate warnings
On arrival
Check settings
Switch off automatic joining of open networks and file sharing.
During the stay
Prefer mobile data
Keep bank apps and sign-ins on your own connection.
Before you leave
Sign out
Log out of shared computers and remove the network from your phone.
Common mistakes
Trusting a network because the name looks right. Confirm it with staff.
Skipping updates for weeks. A trip is the worst time to leave a known hole open.
Using the same password everywhere. One leak then opens many doors.
Leaving devices unattended. Even a short walk away can be enough for a thief.
A quick checklist
Updates installed and screen lock on.
Two-factor sign-in active for email and banking.
Find-my-device switched on.
Copies of key documents stored safely.
A plan for using mobile data when Wi-Fi looks doubtful.
None of this needs special skill. It takes about twenty minutes before you leave, and it protects the accounts that hold your money, your messages and your photos. Repeat it before every long trip, because settings drift and updates arrive quietly. A short routine, repeated, is worth more than any clever tool.
Questions people ask
Do I need a VPN on public Wi-Fi?
A reputable VPN adds a layer of protection against snooping on the local network, but it is not a substitute for updates and two-factor sign-in. Choose a service you trust, because it sees your traffic instead.
Are hotel Wi-Fi networks safe?
Treat them like any shared network. Confirm the network name with the front desk, and avoid sensitive tasks if you can use mobile data instead.
Sources
Written from these pages and checked against them on October 5, 2026. Programs and rules change, so check the provider’s current terms before you decide.
General information, not financial, legal or travel advice. Your own card terms and the provider’s current rules always come first.