Category: Data Breach News

Data Breach Summary

In a distressing security breach,, a mobile application for members of the Brazilian Workers’ Union, fell victim to a compromise of sensitive member information. This breach was detected by our dedicated dark web scanning team at InsecureWeb on June 30, 2023. The responsible hacker, known as “sumo,” leaked the stolen data on the dark web forum “Cronos.”

The breach involved unauthorized access to a database containing a substantial amount of sensitive information from The compromised data includes member IDs, names, identification document numbers (RG), Tax IDs (CPF), total values, corrected values, documents, files, and payment details.

Where and How?

This breach took place predominantly on the dark web forum “Cronos,” notorious for facilitating illegal activities, including data breaches and the trading of stolen information. The hacker, “sumo,” played a pivotal role in disclosing the compromised member data through the publication on the forum.

Further investigation revealed that the breach specifically targeted the database of, compromising sensitive information pertaining to union members. Unauthorized access provided the hacker with access to significant member details such as member IDs, names, identification document numbers (RG), Tax IDs (CPF), total values, corrected values, documents, files, and payment information.

A Screenshot of the data can be found below:

Company Data Breach History

To date, there is no known history of security breaches reported for However, this breach highlights the evolving risks faced by organizations in protecting sensitive member data and underscores the need for robust security measures. is diligently addressing the breach, collaborating with cybersecurity experts to conduct a comprehensive investigation. Their objective is to enhance security protocols, identify any vulnerabilities, and prevent future breaches that could compromise member data integrity and erode trust among union members.

Recommendations for Personal Data Protection

How Users Can Protect Their Information

To protect their personal information and accounts from being compromised, users should take the following steps:

– Change their passwords frequently, with a combination of letters, numbers, and symbols.

– Enable two-factor authentication whenever possible.

– Use unique passwords for each account, to prevent hackers from accessing multiple accounts with the same password.

– Be cautious of suspicious emails or messages, as they may contain phishing links that can compromise their accounts.

– Regularly monitor their accounts for any suspicious activity.

What is InsecureWeb?

InsecureWeb is a Dark Web monitoring service that keeps track of recent data breaches and tracks their impact by monitoring the darkest places of the internet. InsecureWeb notifies users and enterprises when their data has been found online and helps them mitigate the impact.