Digital security before travelling: a practical preparation checklist

Travel makes ordinary digital problems more disruptive. A lost phone can take tickets, maps, account access and contact details with it. Preparation should focus on keeping essential tasks possible, not collecting every security product. Start with the accounts and devices that your journey actually depends on.

Map your essential digital tasks

List what you will need to do: show a ticket, contact accommodation, access banking, retrieve a document or work remotely. For each task, record the account, device and recovery method involved. Look for a single point of failure, such as every account depending on one phone number.

Keep the map private. It is an organisational aid, not a document to send to a hotel or tour provider. Avoid including full passwords, recovery codes or identity details in an everyday travel checklist.

Update before the departure rush

Install supported operating-system and application updates with enough time to check that important services still work. Use official update channels. If a device or application is no longer supported, investigate an appropriate replacement before relying on it for sensitive tasks.

CISA’s travel-related advice reinforces four basic habits: strong passwords, multifactor authentication, recognising phishing and keeping software updated. Those habits form a useful foundation. They do not eliminate every threat or override destination-specific rules.

Strengthen the accounts that matter most

Use unique strong passwords and an appropriate password manager. Enable the strongest authentication method the service supports and that you can manage reliably. Follow the provider’s official setup instructions; authentication options differ between services.

Then consider recovery. If a code goes to your usual phone number, will that number remain available? If the service supports recovery codes, store them securely and separately from the device they are intended to replace. Do not switch methods immediately before travel without testing the normal sign-in and recovery process.

Back up the information you cannot easily replace

Use a secure backup method and confirm that you can retrieve a small test file. A backup that has never been opened is an assumption. Keep essential travel information available offline where appropriate, while protecting sensitive documents with the device’s security controls.

Separate convenience from exposure. A booking reference may need quick access; a complete archive of identity records usually does not. Carry or store only what you need, and share documents through the legitimate recipient’s verified channel.

Prepare the devices themselves

• Set an appropriate screen lock and avoid leaving devices unlocked.
• Use the operating system’s supported encryption and security features.
• Review unnecessary applications and permissions.
• Understand the official lost-device and account-recovery tools.
• Keep device identifiers and support contacts in a secure place.
• Use approved arrangements for employer-owned equipment.

For work travel, ask the employer about permitted data, equipment and destinations. Personal habits do not replace organisational security requirements. See the cross-border work checklist when the trip involves working abroad.

Make a practical connection plan

Understand how you will obtain mobile connectivity and what your provider permits. Check the actual service and roaming terms before departure rather than relying on a general memory of a plan. Keep a way to contact the provider if activation or billing fails.

For shared networks, verify the network name with the venue and avoid unexpected login prompts asking for unrelated account credentials. Use services’ secure official channels. A VPN can be part of a connection plan, but it does not make a phishing site, compromised device or fraudulent recipient trustworthy.

Expect plausible phishing messages

Travel creates convincing themes for fraud: a booking problem, a customs payment, a missing document or a transfer delay. Pause when a message creates urgency. Open the provider’s established application or website independently and investigate there rather than following an unexpected link.

Do not approve authentication requests you did not initiate. If bank details change unexpectedly, verify them through a separate known channel. These habits are particularly useful when making international payments.

Write a lost-device plan

Record the sequence you would follow if the phone disappeared: reach a safe connection, use the provider’s official recovery tools, contact essential services and protect affected accounts. Keep critical contacts accessible without the lost device. Understand the consequences of remote erase before using it; it may affect data and recovery options.

Do not perform a disruptive recovery drill that could lock you out. A careful review of instructions, a tested backup and verified alternative access can reveal gaps without deliberately disabling anything.

After returning

Review temporary access, devices signed into accounts and any unusual alerts. Remove arrangements you no longer need through the service’s normal settings. If you suspect compromise, follow the provider’s incident guidance promptly.

The strongest preparation is a small set of habits you can maintain: update, protect, back up, verify and know how to recover. A holiday is a better time to use that preparation than to discover the plan depended on one device.

Reference

CISA: advice on security while travelling, checked 6 October 2026. This is general personal-device guidance, not a guarantee of security or a substitute for employer policy.