Your MemberManager Password Could Be Sitting in Plain Text Online

HEROIC analysts identified a dataset linked to MemberManager appearing on a well-known hacking forum in late August 2018. MemberManager is a U.S.-based membership management platform built for clubs, charities, and community organizations. The breach exposed 16,074 user records, and what made this incident particularly alarming was the discovery that passwords were stored and leaked in completely plaintext form, readable by anyone who obtained the file. This is the kind of breach where an attacker downloads a single file and instantly holds a ready-to-use list of working credentials.

Why This Is Dangerous

Imagine someone joining your local club or charity through MemberManager and using the same password they use for their bank account or work email. That person's information is now in the hands of criminals. Because the passwords require no cracking whatsoever, attackers can begin testing them against other services the moment they access the file. This is not a theoretical risk -- it is the standard playbook for organized credential theft groups.

What Was Exposed

• Email Addresses
• Plaintext Passwords

Why This Matters

When plaintext passwords from a membership platform leak, the consequences reach far beyond the original site. Credential stuffing attacks use these exact email-and-password pairs to attempt logins on banking portals, social media, and email providers. Account takeover follows quickly when credentials match. From there, attackers can reset other passwords, access financial accounts, or use the compromised email to lauch phishing attacks against the victim's contacts. Identity theft and fraud are common outcomes when this chain plays out. The members of the clubs and charities who trusted MemberManager with their information deserve to know their data was exposed.

How Database Breaches Work

A database breach typically starts when an attacker finds a vulnerability in a website or application, such as a SQL injection flaw, an unpatched software component, or a set of administrative credentials obtained through phishing. Once inside, they export the user database directly to their own systems. In MemberManager's case, the dataset surfaced on a hacking forum, suggesting the attacker either sold it or released it publicly. Platforms that store passwords without hashing them first are esspecially vulnerable because there is nothing standing between the exported data and immediate exploitation.

Check If You Are Affected

HEROIC's free breach scanner searches more than 400 billion exposed records, including datasets from breaches like MemberManager. If you or someone you know ever used MemberManager for a club or charity membership, your credentials may be circulating in criminal databases right now. Search your email address at HEROIC for free to find out what has been exposed and what to do next.