Mexico has once again been the target of a serious cybersecurity threat: the Grandoreiro banking Trojan. Detected by Kaspersky's Global Research and Analysis Team (GReAT), this malware has been responsible for more than 51,000 attacks so far in 2024, representing around 5% of attacks of this type worldwide.

What is Grandoreiro?

Grandoreiro is a banking Trojan that originated in Latin America and has evolved into a sophisticated and customized threat for different regions, including Mexico. Its main objective is to steal sensitive user information, such as banking credentials, passwords, and other financial data, through social engineering techniques and the manipulation of computer systems.

This malware is usually distributed through fraudulent emails or infected websites, tricking users into downloading malicious files or clicking on compromised links. Once installed, Grandoreiro takes control of the infected computer, monitoring user activities and stealing sensitive information, mainly related to bank accounts.

The threat in numbers

Mexico has become one of the countries most affected by this cyber threat, with more than 51,000 attacks related to Grandoreiro so far in 2024. This figure is alarming and positions the country as a priority target for cybercriminals using this Trojan. Globally, 5% of banking Trojan attacks recorded this year have been attributed to Grandoreiro, underlining the seriousness of the situation.

How to protect yourself from the Grandoreiro Trojan?

The best defense against this type of threat is prevention and cybersecurity education. Here are some key tips to protect yourself from the Grandoreiro Trojan and other similar malware:

1. Don't click on suspicious links: Avoid opening unsolicited emails or messages, especially if they contain unknown links or attachments. Always verify the legitimacy of senders before clicking on any links.

2. Use antivirus and antimalware software: Install and keep reliable security programs up to date on all your devices. These tools can detect and remove threats like Grandoreiro before they infect your computer.

3. Keep your software up to date: Cybercriminals often take advantage of vulnerabilities in outdated software. Make sure you have the latest versions of your operating system and applications.

4. Enable multi-factor authentication (MFA): Whenever possible, enable multi-factor authentication on your bank accounts and other online services. This adds an extra layer of security and makes it harder for attackers to gain access, even if they get your credentials.

5. Be careful about the websites you visit: Only browse trusted sites and avoid downloading files or programs from unknown or unverified sources.

6. Monitor your bank accounts: Regularly review your financial transactions and immediately report any suspicious activity to your bank.

The growing threat of Grandoreiro in Mexico is a reminder of the importance of cybersecurity in our daily lives. As this banking Trojan continues to evolve, it is crucial for users to stay informed and take proactive steps to protect their data. With the right combination of technology and awareness, we can reduce the impact of these threats and keep our finances and personal data safe.