Municipality of Quilmes · Breach

Threat actor claims leak of Quilmes municipality database

Nov 05, 2026 · 1 min read

A threat actor claims on an underground forum to have leaked a database tied to the Municipality of Quilmes, Buenos Aires Province, with email addresses, passwords and full names. The post shows no sample or record count, and the claim has not been verified. If genuine, the data enables credential stuffing and phishing; anyone reusing passwords should change them.

By HIFY Radar newsroom Updated 11/05/2026 12:11 AM Get this every day →← Back to the feed 1 source

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In this article

What happened
Why it matters
What to do
For the technical team
Timeline
Sources

What happened

A threat actor on an underground forum claims to have leaked a database tied to the Municipality of Quilmes, Buenos Aires Province. The listing allegedly includes email addresses, passwords and full names. The claim is unverified, with no sample or record count shown.

Why it matters

If genuine, email and password pairs from a municipal portal enable credential stuffing against city and personal accounts, plus phishing impersonating local government. Staff and residents reusing passwords are directly at risk. Without verification, the scope remains unknown.

What to do

Require password changes for municipal accounts and enable two-factor authentication. Monitor for anomalous logins and warn staff and residents about emails impersonating the city government.

For the technical team

Affected: Municipality of Quilmes, na província de Buenos Aires (Argentina); base alegada com e-mails, senhas e nomes completos · Alleged database tied to the Municipality of Quilmes, Buenos Aires Province, Argentina. No specific products or systems named.
Exploitation: Unverified claim posted on an underground forum and reported by DailyDarkWeb. No sample, no record count, no reported exploitation.
Fix: No fix applicable (alleged leak). Mitigation cited in the source: change reused passwords.
Vector: No technical detail in the source: the origin of the alleged database is unknown. Cited risk is credential stuffing with email and password pairs against city and personal accounts.
More details: Origin of the report: underground forum post monitored by DailyDarkWeb. Additional cited risk: phishing impersonating local government. Full source details are subscribers-only.