Toumei data breach (2023): was your email exposed?
Toumei (toumei.co.jp) suffered a data breach in October 2023 that exposed around 76,682 accounts. The leaked records included email addresses, names, phone numbers and physical addresses. Check whether your email was caught up in it — and lock down your accounts before the data is misused.
Check if my email was exposed — free →What happened in the Toumei breach?
Toumei (toumei.co.jp) was hit by a data breach dated October 2023, exposing around 76,682 accounts. Incidents like this happen when attackers break into a company’s user database, or when a misconfigured server or third-party partner leaks it — and the stolen records then spread among other criminals.
The exposed records included email addresses, names, phone numbers and physical addresses. Leaked data doesn’t simply disappear: it gets copied, sold and re-posted across breach forums and dark-web markets for years. That’s why your information from the Toumei breach can still be abused long after the original incident — and why checking your exposure and locking down your accounts matters even now.
What data was exposed in the Toumei breach?
The Toumei breach exposed email addresses, names, phone numbers and physical addresses. The more of these are tied to you, the more ways an attacker can impersonate you or break into your other accounts.
How the leaked Toumei data can be used against you
Because the Toumei breach exposed email addresses, names, phone numbers and physical addresses, your email address becomes a target for convincing phishing, often referencing this very breach to look legitimate; your phone number fuels scam calls and smishing (fraudulent texts); and your address can be used to locate you, sold on to people-search sites, or used in doxxing.
How to check if you were affected
The leaked records themselves aren’t published openly, so the way to know is to check your email against known breach and dark-web databases. Our free tool does exactly that in a few seconds — no account needed.
Check my email against known breaches — free →What to do if your Toumei account was breached
These steps are prioritized for exactly the kind of data the Toumei breach exposed.
Add 2FA — ideally an authenticator app or a passkey rather than SMS — to your email, banking and other important accounts, so a stolen password alone can’t get in.
Leaked numbers feed robocalls and smishing. Never act on an unsolicited call or text, enable your carrier’s spam filter, and remove your number from data-broker sites that resell it.
Exposed addresses spread to people-search sites that anyone can look up. Opting out of data brokers makes your home harder to find and lowers your doxxing risk.
Scammers reference real breaches to sound credible, so treat any email mentioning Toumei with suspicion, and never use a password-reset link you didn’t request — go to the site directly instead.
Leaked data is resold for years, so a one-time clean-up isn’t enough. Ongoing breach and dark-web monitoring tells you the moment your details reappear, so you can act before an account is misused.
The Toumei breach, answered
Was my email in the Toumei breach?
You can find out in seconds with our free breach and dark-web check — enter your email and it tells you whether it appears in the Toumei breach and other known incidents.
When did the Toumei breach happen?
The Toumei data breach is dated October 2023 and exposed roughly 76,682 accounts. Note that breached data often surfaces and is resold long after the original date.
What data was exposed in the Toumei breach?
The exposed records included email addresses, names, phone numbers and physical addresses. Around 76,682 accounts were affected.
What should I do after the Toumei breach?
Change your Toumei password and any reused passwords, turn on two-factor authentication, watch for phishing that references Toumei, and monitor whether your details resurface on the dark web.
Was your email in the Toumei breach?
Check free in about a minute — then we’ll help you remove your exposed data and keep it monitored.
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