Emergency
Think you are under attack? Start here.
Stay calm and work through these steps. Then contact us through the form, and we will reply as soon as we can on weekdays during business hours. For anything urgent, also contact the official bodies below.
First steps
- 1
Write down what you see
Time, what happened, and screenshots. Do not delete anything yet: it is evidence.
- 2
Limit the damage
Put the site into maintenance mode, or disconnect the affected computer from the network.
- 3
Change passwords from a clean device
Admin, server and email accounts first. Turn on two-factor authentication.
- 4
Contact the right people
Your web agency or hosting company, then the official bodies below. If personal data may have leaked, check the reporting rules.
Where to report and ask for advice
These are the official public contacts in Japan.
Be ready next time
An incident retainer agrees contacts and steps in advance, so you are not starting from zero.
We do not have a 24-hour phone line. Please use the form; we reply on weekdays during business hours.