Introduction
The latest breach involves Prosper with a domain of prosper.com. This breach occurred on 2025-09-01.
Overview
In September 2025, Prosper announced that it had detected unauthorised access to their systems, which resulted in the exposure of customer and applicant information. The data breach impacted 17.6M unique email addresses, along with other customer information, including US Social Security numbers. Prosper advised that they did not find any evidence of unauthorised access to customer accounts and funds, and that their customer-facing operations were uninterrupted. Further information about the incident is contained in Prosper’s FAQs. the breach of Prosper poses serious risks, including potential phishing attacks, identity theft, and other security concerns.
Breach Details
- Breach Name: Prosper
- Breach Date: 2025-09-01
- Compromised Accounts: 17,605,276
- Compromised Data: Browser user agent details, Credit status information, Dates of birth, Email addresses, Employment statuses, Government issued IDs, Income levels, IP addresses, Names, Physical addresses
Disclaimer
HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any files or stolen information. Any legal concerns regarding the content should be directed at the attackers, not HookPhish. This blog is dedicated to posting editorial news, alerting readers about companies falling victim to ransomware attacks. HookPhish has no affiliation with ransomware threat actors or groups, and it does not host infringing content. The information on this page is automatically generated and redacted, sourced directly from the Onion Dark Web Tor Blogs pages.
Preventive Measures
What can individuals and companies do to safeguard against similar breaches? Strengthen your defenses against phishing attacks through our Phishing Simulation training.
Education is key in defending against social engineering attacks. Learn more about our Awareness Training program to educate your employees and fortify your defenses.
FAQ
What should I do if I was affected by this breach?
Changing your passwords immediately is a crucial first step. Consider using unique, strong passwords for each of your accounts.
How can I check if my email address was part of the compromised data?
You can use online tools or services that allow you to check if your email address has been involved in recent data breaches. Be cautious about inputting sensitive information into unknown websites and prefer reputable platforms.
Is two-factor authentication (2FA) recommended after this incident?
Yes, enabling 2FA adds an extra layer of security to your accounts. It’s highly recommended to activate 2FA wherever possible to enhance the protection of your online accounts.
Should I be concerned about phishing attempts after this breach?
Absolutely. Be vigilant for phishing emails or messages attempting to exploit the breached data. Avoid clicking on suspicious links and verify the authenticity of any communication, especially if it asks for personal information or login credentials.
Has Prosper addressed the security issues that led to this breach?
Prosper has not provided specific details about the security measures implemented post-incident. It’s advisable to monitor official statements from Prosper or related authorities for updates on their security enhancements.
Are there any legal actions being taken against the perpetrators of this breach?
As of now, there is no information on legal actions. Cybersecurity agencies and law enforcement may be investigating the incident. Stay informed through official channels for any developments regarding legal proceedings.
Conclusion
This breach serves as a stark reminder of the importance of robust cybersecurity practices. By staying vigilant and informed, we can better protect ourselves from similar threats.
