Troy Hunt's Mailchimp List data breach (2025): was your email exposed?
Troy Hunt's Mailchimp List (troyhunt.com) suffered a data breach in March 2025 that exposed around 16,627 accounts. The leaked records included email addresses, geographic locations, ip addresses and latitude and longitude pairs. 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 Troy Hunt's Mailchimp List breach?
Troy Hunt's Mailchimp List (troyhunt.com) was hit by a data breach dated March 2025, exposing around 16,627 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, geographic locations, ip addresses and latitude and longitude pairs. 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 Troy Hunt's Mailchimp List 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 Troy Hunt's Mailchimp List breach?
The Troy Hunt's Mailchimp List breach exposed email addresses, geographic locations, ip addresses and latitude and longitude pairs. 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 Troy Hunt's Mailchimp List data can be used against you
Because the Troy Hunt's Mailchimp List breach exposed email addresses, geographic locations, ip addresses and latitude and longitude pairs, your email address becomes a target for convincing phishing, often referencing this very breach to look legitimate; your address can be used to locate you, sold on to people-search sites, or used in doxxing; and your IP address hints at your location and helps link your activity across sites.
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 Troy Hunt's Mailchimp List account was breached
These steps are prioritized for exactly the kind of data the Troy Hunt's Mailchimp List 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.
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 Troy Hunt's Mailchimp List 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 Troy Hunt's Mailchimp List breach, answered
Was my email in the Troy Hunt's Mailchimp List 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 Troy Hunt's Mailchimp List breach and other known incidents.
When did the Troy Hunt's Mailchimp List breach happen?
The Troy Hunt's Mailchimp List data breach is dated March 2025 and exposed roughly 16,627 accounts. Note that breached data often surfaces and is resold long after the original date.
What data was exposed in the Troy Hunt's Mailchimp List breach?
The exposed records included email addresses, geographic locations, ip addresses and latitude and longitude pairs. Around 16,627 accounts were affected.
What should I do after the Troy Hunt's Mailchimp List breach?
Change your Troy Hunt's Mailchimp List password and any reused passwords, turn on two-factor authentication, watch for phishing that references Troy Hunt's Mailchimp List, and monitor whether your details resurface on the dark web.
Was your email in the Troy Hunt's Mailchimp List breach?
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