A series of fiber optic cable failures in the Red Sea this week caused widespread internet disruptions across Europe, Asia, and the Middle East, temporarily affecting performance on Microsoft’s Azure cloud platform.
On Saturday, Microsoft confirmed that Azure experienced service issues due to “undersea cable cuts in the Red Sea.” Users whose data traveled through the Middle East encountered increased latency and routing delays. The company responded by rerouting traffic and optimizing network paths to reduce the impact. Later, Microsoft confirmed that Azure had fully recovered and was operating normally.
This outage was not isolated to Azure. NetBlocks, an independent internet monitoring group, reported reduced connectivity in several countries, including India and Pakistan. The disruptions were linked to multiple simultaneous submarine cable cuts in the Red Sea. Analysts identified three affected systems—SEACOM/TGN-EA, AAE-1, and EIG—which are part of a critical global data corridor handling around 17% of internet traffic between Europe and Asia. The high concentration of cables in this narrow region makes the Red Sea one of the world’s most vital digital chokepoints.
Disruptions in this area can have far-reaching consequences, impacting businesses, governments, and consumers globally. The incident highlights the vulnerability of systems that rely on stable data flows, with potential effects on financial transactions, government communications, and cloud-based services. As economies grow more dependent on real-time digital connections, interruptions can delay trade, financial settlements, and even essential healthcare and security operations.
The exact cause of the cable cuts remains unknown. Possible explanations include accidental damage from ship anchors in shallow waters or intentional sabotage amid rising regional tensions. The Red Sea has seen repeated attacks by Yemen’s Houthi forces, who have targeted commercial shipping with missiles and drones in response to the Gaza conflict. While the Houthis have denied attacking communication infrastructure, their actions have already introduced instability in one of the world’s busiest maritime zones.
Beyond human conflict, natural disasters such as earthquakes, undersea landslides, and volcanic activity have historically damaged cables, underscoring the complex and layered risks facing global data routes. Unlike land-based infrastructure, fixing deep-sea cables requires specialized ships and equipment, which can delay repairs for weeks. In conflict zones like the Red Sea, where access is restricted, recovery efforts face even greater challenges.
Submarine cable repairs are technically demanding and time-intensive. Special vessels must locate the break, retrieve the damaged section from the ocean floor, and splice the cable back together. Depending on location and security conditions, this process can take several weeks. Industry experts warn that future outages could last longer if multiple cables are damaged simultaneously or if geopolitical conditions deteriorate.
More than 400 submarine cables support the global cloud infrastructure, most of which pass through narrow maritime corridors prone to both accidental and intentional damage. Despite redundancy measures, simultaneous failures at critical points like the Red Sea can overwhelm backup systems, leading to noticeable service degradation. Looking forward, new technologies could help mitigate these risks. AI-powered network monitoring can detect traffic anomalies and reroute data more efficiently during outages, minimizing downtime. Quantum communication, though still in development, offers a more secure and resilient alternative for transmitting sensitive government and defense information.
This is not the first such incident. In 2022, the Nord Stream pipeline explosions and damage to Baltic Sea cables raised concerns about infrastructure security in Europe. Similarly, recurring incidents in the South China Sea have drawn attention to vulnerabilities in Asia's digital backbone.
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