sti.com.br Leak Puts 1,778 Accounts at Risk of Identity Theft

In May 2026, HEROIC analysts identified a combolist file uploaded to Telegram containing 1,778 records tied to sti.com.br accounts. Each record paired an email address with a plaintext password and a matching URL, a combination that leaves the data ready for immediate use rather than sitting as a random, unusable pile of information.

Why This Is Dangerous

Plaintext passwords remove the one barrier that would normally slow an attacker down, since there is no encryption to break before the credentials work. The matching URLs point directly to where each sti.com.br login applies, giving an attacker a precise target instead of a vague guess.

What Was Exposed

• Email Addresses
• Plaintext Password
• URLs

Why This Matters

With 1,778 accounts in this file, identity theft is a real possibility for anyone caught up in it, especially if they reused their password elsewhere. Attackers routinely feed lists like this into automated credential stuffing tools, testing each login against banking sites, email providers, and online retailers. A single successful match can open the door to account takeover and financial fraud, with consequences that reach far beyond sti.com.br itself.

How This Combolist Was Likely Assembled

Files like this one are typically built by pulling login credentials from older breaches, malware-infected devices, and previously leaked databases, then merging everything into one distributable list. Telegram remains a popular channel for sharing these compilations, letting them reach a wide pool of buyers with little scrutiny. The inclusion of matching URLs suggests this list was built for immediate testing rather than passive storage.

Check If You Are Affected

If you use an sti.com.br email account, change its password right away, and update it anywhere else you may have reused the same one. HEROIC's free breach scanner checks your details against a database of more than 400 billion leaked records, giving you a fast, no-cost way to see whether you appear in this leak or any other before an attacker gets the chance to use it.