Critical Infrastructure Under Siege: APT Attacks Escalate in Latin America

Executive Summary

Advanced Persistent Threats (APTs) are intensifying their operations against critical infrastructure in Latin America, with notable activities targeting power grids, water systems, industrial control systems (ICS), healthcare, and the financial sector. These sophisticated cyberattacks are orchestrated by state-sponsored actors aiming to disrupt essential services, steal sensitive data, and achieve geopolitical objectives.

Targeted Sectors and Threat Actors

• Power Grids and Water Systems: APT groups, including China-aligned entities such as Earth Alux, have been observed targeting critical infrastructure in Latin America. These groups employ advanced cyber espionage techniques to infiltrate and exfiltrate sensitive data from sectors like government, technology, logistics, manufacturing, telecommunications, IT services, and retail. (industrialcyber.co)

• Industrial Control Systems (ICS): The rise in cyberattacks on ICS and Supervisory Control and Data Acquisition (SCADA) systems poses significant risks to critical infrastructure. Threat actors exploit vulnerabilities in these systems, often leveraging basic intrusion techniques, to gain unauthorized access and potentially disrupt operations. (securityweek.com)

• Healthcare Sector: In September 2025, Brazil's healthcare software provider MedicSolution was targeted by the ransomware group KillSec, exposing sensitive patient data across hospitals and clinics. This incident underscores the vulnerability of healthcare systems to cyber threats. (privatebank.jpmorgan.com)

• Financial Sector: Brazilian authorities uncovered a breach in the PIX instant payment system, where insiders and hackers stole approximately $100 million USD. This breach prompted the Central Bank of Brazil to implement immediate measures to enhance financial system security. (privatebank.jpmorgan.com)

Tactics and Techniques

APT groups employ a range of sophisticated tactics to infiltrate critical infrastructure:

• Exploitation of Vulnerabilities: Attackers exploit unpatched vulnerabilities in ICS and SCADA systems, often using basic intrusion techniques to gain unauthorized access. (securityweek.com)

• Supply Chain Attacks: Compromising third-party vendors to gain access to target organizations' networks is a common strategy. For instance, APT groups have targeted network appliances, IoT devices, and software supply chains to maintain persistent access and exfiltrate sensitive data. (rhisac.org)

• Ransomware and Data Exfiltration: Deploying ransomware to encrypt critical data and demanding payment for its release is a prevalent tactic. Additionally, exfiltrating sensitive information for financial gain or espionage purposes is common. (privatebank.jpmorgan.com)

Recommendations

To mitigate the risks posed by APTs targeting critical infrastructure in Latin America, organizations should consider the following measures:

• Regular Vulnerability Assessments: Conduct thorough and regular assessments of ICS and SCADA systems to identify and patch vulnerabilities promptly.

• Supply Chain Security: Implement stringent security protocols for third-party vendors to prevent supply chain attacks.

• Incident Response Planning: Develop and regularly update incident response plans to ensure swift and effective responses to cyber incidents.

• Employee Training: Provide comprehensive cybersecurity training to employees to recognize and respond to phishing attempts and other social engineering tactics.

Conclusion

The escalation of APT attacks against critical infrastructure in Latin America underscores the urgent need for enhanced cybersecurity measures. By proactively addressing vulnerabilities and implementing robust security protocols, organizations can better defend against these sophisticated threats and ensure the continuity of essential services.

Highlights:

• Trend Micro exposes Earth Alux Chinese APT targeting critical infrastructure in APAC, Latin America - Industrial Cyber, Published on Wednesday, April 02
• The cybersecurity imperative: Latin America’s challenge and opportunity | J.P. Morgan Private Bank Latin America, Published on Monday, March 09
• US Warns of Hackers Targeting ICS/SCADA at Oil and Gas Organizations - SecurityWeek, Published on Tuesday, May 06