Asean Securities Joint Stock Company (Asean Securities) hereby announces details regarding an IT incident that affected clients' securities trading activities, as follows: Incident details: Clients experienced trading disruptions at Asean Securities between 08:53 and 09:45 on August 27, 2026. Cause: A power outage combined with a generator failure at the office building disrupted Asean Securities' connectivity to the Stock Exchanges from 08:53 to 09:45 on August 27, 2026. Remedial measures: Asean Securities immediately implemented technical measures to stabilize the system and restore connections to the Stock Exchanges. System stability was restored at 09:45 on August 27, 2026, and Asean Securities has notified all clients that the issue has been resolved. Further details are provided in the attached official dispatch: CV CBTT
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