diasdeprimavera.com.br targeted by cicada3301 in alleged data leak

• Ransomware group: cicada3301
• Country: Brazil
• Sector: Retail & E-Commerce
• Announcement date: July 18, 2025

Cicada3301 claims data leak against diasdeprimavera.com.br

The threat actor known as cicada3301 has published an announcement on their leak site targeting the Brazilian organization diasdeprimavera.com.br. According to the claims made by the group, a significant amount of data belonging to the company has been compromised and is being leaked. This announcement follows a pattern often seen in modern cyberattacks where threat actors use public leak sites to exert pressure on their targets.

The threat actor listed these files on July 18, 2025, and initiated the process of the leak on that same date. The group alleges that the total volume of the data involved in this incident is 106 GB. While the group has provided the size of the data, they have not provided information regarding the specific file count or a specific ransom demand.

Details of the alleged data breach

The announcement made by cicada3301 suggests that the leaked information contains highly sensitive documents. Based on screenshots provided by the threat actor, the data includes various types of records that could pose significant risks to the individuals involved. These samples indicate that the breach is not limited to simple corporate files but extends into sensitive personal and financial documentation.

The specific types of data mentioned in the listing include:

• Notarial records
• Personal identification information
• Bank receipts

The presence of such diverse data types highlights the potential impact of the breach on both the organization and its customer base. In many ransomware scenarios, attackers employ a tactic known as double extortion. In this method, the threat actor not only encrypts the victim's systems to disrupt operations but also steals sensitive data to use as leverage. By threatening to publish this information on a public leak site, the attackers aim to create maximum pressure on the organization to meet their demands.

About diasdeprimavera.com.br

Dias de Primavera is a Brazil-based retail and e-commerce company. The organization operates within the fields of home goods, decoration, and various consumer products, serving a wide range of customers through its digital and retail presence.

Analysis and potential risks

The alleged leak of sensitive notarial and registration data may increase the risk of identity theft and fraud for the organization's clients. Because the data reportedly contains personal identification information and bank receipts, the victims may face direct financial or identity-related threats. Furthermore, this data might be utilized in targeted phishing attacks, where attackers use stolen information to craft highly convincing messages to deceive individuals.

From a regulatory perspective, the organization could face legal obligations under Brazil's LGPD (General Data Protection Law). Such laws require organizations to protect personal data and report breaches to authorities and affected individuals, often carrying significant penalties for non-compliance. The combination of regulatory pressure and the threat of reputational damage creates a complex crisis management environment for the company.

While public information about the cicada3301 group remains limited, their ransomware tactics appear intended to create pressure through the publication of data. For organizations in the retail and e-commerce sector, such incidents underscore the importance of robust data protection strategies. Common defensive steps for organizations include implementing strong access controls, maintaining regular offline backups, and employing continuous monitoring to detect unauthorized data exfiltration. Additionally, organizations often focus on employee training to prevent initial access through phishing and ensuring that sensitive customer data is encrypted both at rest and in transit to mitigate the impact of a potential leak.