ADDA data breach: 1.8M accounts exposed
Severity: high · Patch status: no-fix-needed · Since 2025-11-23
In March 2025, data allegedly breached from the ADDA housing societies service was posted to a public hacking forum. The data contained over 1.8M unique email addresses along with names, phone numbers and MD5 password hashes. Exposed data: email addresses, names, passwords, phone numbers. The breach dates from Mar 24, 2025; Have I Been Pwned loaded it on Nov 23, 2025.
What to do
- If you had a ADDA account, change its password and the password of any other account that reused it.
- Turn on multi-factor authentication wherever it is offered.
- Check whether your addresses are in this breach at https://haveibeenpwned.com.
- Expect targeted phishing that quotes the leaked details; verify any unexpected contact out of band.
Sources
All live incidents on Threat Watch