Paycloud Holdings
Tokyo, Japan4 sources
Confirmed:Confirmed by the organisation, a regulator or a securities filing. First reported 30 Oct 2026.
Paycloud Holdings confirms 77 million email addresses leaked via Arara Message
Paycloud Holdings confirmed that unauthorized access to its subsidiary's servers leaked approximately 77 million email addresses. The breach also exposed registered information for up to 380 corporate clients using the Arara Message service.
- Type
- Data breach
- Sector
- Technology
- Records
- 77M records confirmed
- First reported
- 30 Oct 2026
- Latest source
- 3 Nov 2026
What to do
- If you have an account, change that password, and anywhere you reused it.
- Turn on two-factor authentication, ideally an authenticator app or passkey, not SMS.
- Expect phishing that uses your real details. Do not click links in messages about this incident; go to the company's site directly.
- If payment cards were involved, watch statements and ask your bank for a new card.
- If government ID or social security numbers were involved, consider a credit freeze.
- If this is a vendor of yours, ask what of your data they held and whether it was in scope.
- Reset any API keys, SSO trusts or shared credentials you have with them.
- Brief your help desk: attackers often impersonate the breached brand next.
Not sure? Ask an assistant with the sources attached, or have a coding agent check your systems.
Check your systems for Paycloud Holdings