The AEO (Authorized Economic Operator) authorization represents a recognition of reliability issued by customs authorities to economic operators who demonstrate high security standards in the supply chain. The AEOS (AEO Security and Safety) variant specifically requires compliance with stringent criteria regarding physical, logistical, and IT security.

To maintain this certification over time, implementing initial controls is not enough: a continuous monitoring system capable of promptly detecting anomalies, breaches, and threats is required. In this context, tools such as a Security Operation Center (SOC) and Managed Detection and Response (MDR) services become strategic allies to ensure compliance and protect the entire supply chain.

Why continuous monitoring is an AEO requirement

The AEOS authorization is not a static milestone. Customs authorities require economic operators to maintain the declared security standards over time through:

• Constant vigilance over business processes and IT infrastructure
• Early detection of non-compliance or operational anomalies
• Timely communication to authorities in the event of significant incidents

According to Article 23 of the Union Customs Code (UCC), the operator must integrate effective self-monitoring systems into their internal controls. A SOC allows for the centralization of surveillance across networks, systems, and applications, quickly identifying significant variations and activating the necessary escalation procedures.

Incident management: procedures, reporting, and traceability

The Self-Assessment Questionnaire (SAQ) requires companies to document clear procedures for managing security incidents, such as:

• Unauthorized access to systems or restricted areas
• Theft of goods, documents, or devices
• Physical or cyber intrusions

Every incident must be:

• Reported to the responsible personnel according to defined workflows
• Investigated to identify causes and responsibilities
• Documented in a register inspectable by customs authorities
• Resolved with corrective measures to prevent recurrence

In the event of a breach, authorities require an immediate review of procedures and the implementation of reinforced controls. Services such as Digital Forensics and Incident Response (DFIR) support the forensic analysis of events and the definition of effective remediation strategies. For structured incident management according to national regulations, it is also useful to consult the ACN security incident taxonomy.

Business Continuity and Disaster Recovery: operational requirements

Section 3 of the SAQ evaluates the operator’s ability to ensure operational continuity even in the event of failures or emergencies. Article 25 of the Implementing Regulation (IR) requires a contingency plan (Business Continuity Plan) that includes:

• Periodic backups of critical programs and data
• Disaster Recovery Plan to quickly restore systems
• Perimeter protection through firewalls, antivirus, and intrusion detection systems

Customs authorities emphasize that passive systems, such as CCTV cameras that merely record without active monitoring, may not be considered adequate for AEOS standards. It is necessary to demonstrate capabilities for proactive detection and timely response to threats.

The role of the SOC and MDR services in AEO compliance

A Security Operation Center offers:

• 24/7 monitoring of networks, servers, and applications
• Correlation of events from multiple sources (firewalls, IDS/IPS, endpoints)
• Detection of behavioral anomalies and intrusion attempts
• Centralized management of alerts and escalations

MDR (Managed Detection and Response) services integrate XDR technologies with the expertise of specialized analysts, ensuring:

• In-depth analysis of advanced threats
• Coordinated incident response
• Detailed reporting for audits and customs verifications

These tools facilitate the demonstration of compliance during inspection visits by providing documentary evidence of continuous monitoring and structured security event management. For a comprehensive approach to cybersecurity in the AEO context, it is essential to also integrate vulnerability management activities and periodic infrastructure checks.

Frequently asked questions about monitoring and incident response for AEOS

• Is it mandatory to have a SOC to obtain AEOS authorization?
• It is not formally mandatory to cite a SOC in the documentation, but the regulations require continuous monitoring of activities and early detection of non-compliance. A SOC greatly facilitates the demonstration of these high standards during a customs audit.
• How should a cybersecurity incident be managed?
• Through a documented procedure that includes reporting to the manager, investigating the causes, adopting corrective measures, and reviewing existing security policies to prevent recurrence. Every incident must be recorded and tracked.
• What is meant by a contingency plan in the AEO context?
• It refers to a documented business continuity and disaster recovery plan aimed at ensuring the restoration of programs and data following a system failure or cyber incident, with periodic backup and restoration test procedures.
• Is it necessary to keep an incident log?
• Yes. The operator must document all security-related incidents and the measures taken. These logs must be made available to the customs authority during on-site visits and kept for the period required by regulations.
• How often do authorities verify the maintenance of security requirements?
• Although monitoring is continuous, an on-site visit is expressly recommended at least every three years for AEOS authorizations. However, authorities may conduct extraordinary checks in the event of reports or anomalies.

AEOS authorization requires a constant commitment to process monitoring, structured security incident management, and the maintenance of updated contingency plans. Tools such as SOC, MDR, and DFIR represent strategic allies to ensure customs compliance and protect the supply chain from internal and external threats.

Related insights

• AEO certification and cybersecurity: requirements and best practices
• Security governance for AEOS authorization
• Network Penetration Test for AEOS compliance
• AEO Audit and Vulnerability Assessment
• Cybersecurity training for AEO operators