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Data leaks and fake warnings:
check what to do first

Did you only open a link, or also enter information, pay or allow remote control? Choose what you know to organize immediate actions and official resources.

No actual personal details neededChoices are not stored or sent
From your situation to the actions you need

  1. Choose your situation

    Opened, entered information or granted control

  2. Identify the information types

    Do not enter the information itself

  3. See what to do first

    Action order, official support and detailed steps

General initial guidance. The official resources include Japanese-language sources and Japan-specific institutions and procedures. For financial, identity-document or workplace matters, follow the relevant provider and local authority. This page does not diagnose compromise or contact anyone for you.

Start with a common situation

This changes the selections below. Adjust them to match your situation.

1What did you actually do?

Select everything that applies. If you did nothing or are unsure, you can continue without selecting anything.

Selected actions: 0 selected

2What types of information are involved?

Select only types listed in an official notice or that you may have provided. Do not enter the information itself.

3What have you confirmed?

Choices are processed only on this page. They are not stored or sent to analytics or advertising. Use Reset to clear your choices and response checklist.

Response to your selected situation

Your next steps, in order

Choose your situation and press “See what to do”. Repeated actions are combined when several situations apply.

Stop

First stop connections, payments or further input that could increase harm

Check

Check official support, account history and who a notice covers

Prepare

After recovery, review password reuse and authentication settings

Read more about your situation

Check whether a password was leakedWhen driving licence information is leakedClose a fake virus warning

Initial guidance reviewed on 13 October 2026. Lost-device guidance additionally reviewed on 15 October 2026. These are general initial steps based on official information. Follow your service provider's or organization's instructions first.