1,000 UOL.com.br Emails Stolen: Brazilian Stealer Exposed

HEROIC analysts identified this stealer log on January 11, 2026, exposing 1,000 records linked to UOL.com.br accounts. The breach compromised email addresses, plaintext passwords, and URLs documenting the browsing activity of each affected user.

Why This Stealer Log Is Dangerous

Plaintext passwords are immediately usable without any decryption step. Attackers can log into UOL.com.br accounts instantly using the exposed credentials. Because UOL.com.br email addresses are often used to recover passwords on other platforms, a single compromised account can cascade into access to banking, shopping, and social media services.

What Was Exposed

• Email addresses from UOL.com.br user accounts
• Plaintext passwords stored without encryption or hashing
• URLs revealing websites and services visited by each victim

Why This Matters

Stolen email and password pairs fuel credential stuffing attacks that test the same combination against banking portals, social media platforms, and e-commerce sites. Studies show over 60% of people reuse passwords, meaning a single UOL.com.br credential can unlock multiple high-value accounts. Financial fraud, identity theft, and unauthorized access to personal documents often follow.

How Stealer Logs Harvest Your Credentials

Stealer logs originate from infostealer malware that silently infects personal computers. The malware typically spreads through phishing emails, pirated software, and compromised websites. Once installed, it extracts saved passwords from browsers, captures cookies that bypass two-factor authentication, and records browsing history. The harvested data is compiled into log files and distributed through Telegram channels where threat actors buy and sell them.

Check If You Are Affected

HEROIC offers a free breach scanner backed by a database of over 400 billion compromised records. Search your email address to determine whether your credentials appear in this stealer log or any other breach. If your data is found, change your UOL.com.br password immediately and enable two-factor authentication on all connected accounts.