Prosper data breach (2025): was your email exposed?
Prosper (prosper.com) suffered a data breach in September 2025 that exposed around 18 million accounts. The leaked records included browser user agent details, credit status information, dates of birth, email addresses, employment statuses and government issued ids and more. 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 Prosper breach?
Prosper (prosper.com) was hit by a data breach dated September 2025, exposing around 18 million 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 browser user agent details, credit status information, dates of birth, email addresses, employment statuses, government issued ids, income levels and ip addresses and more. 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 Prosper 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 Prosper breach?
The Prosper breach exposed browser user agent details, credit status information, dates of birth, email addresses, employment statuses, government issued ids, income levels, ip addresses, names 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 Prosper data can be used against you
Because the Prosper breach exposed browser user agent details, credit status information, dates of birth, email addresses, employment statuses and government issued ids and more, 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 Prosper account was breached
These steps are prioritized for exactly the kind of data the Prosper 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 Prosper 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 Prosper breach, answered
Was my email in the Prosper 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 Prosper breach and other known incidents.
When did the Prosper breach happen?
The Prosper data breach is dated September 2025 and exposed roughly 18 million accounts. Note that breached data often surfaces and is resold long after the original date.
What data was exposed in the Prosper breach?
The exposed records included browser user agent details, credit status information, dates of birth, email addresses, employment statuses and government issued ids and more. Around 18 million accounts were affected.
What should I do after the Prosper breach?
Change your Prosper password and any reused passwords, turn on two-factor authentication, watch for phishing that references Prosper, and monitor whether your details resurface on the dark web.
Was your email in the Prosper breach?
Check free in about a minute — then we’ll help you remove your exposed data and keep it monitored.
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