ISO Activities
ISO/IEC 27001 Surveillance Audit – 1st Year (2025)

In accordance with the requirements of the ISO/IEC 27001 Information Security Management System standard, organizations that have obtained certification are subject to Surveillance Audits conducted by the Certification Body (CB) in the first and second years following certification. A re-certification assessment is required in the third year and must be completed before the certificate expires.
On June 10–11, 2025, auditors from SGS (Thailand) Limited, acting as the Certification Body (CB), conducted the 1st Surveillance Audit for 2025. The audit included sampling and reviewing operational processes across various departments at the Head Office Building, Ladprao Toll Plaza Building, Din Daeng Toll Plaza Building, and Sutthisan Toll Plaza Building.
The audit results confirmed continued compliance with the ISO/IEC 27001 standard, with no Major Non-Conformities (Major NC) identified. This outcome reflects the Company’s strong commitment to maintaining robust information security management practices in line with international standards.