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The Ambition of the Sui Dynasty that Swallowed Southeast Asia, Falling into Goguryeo's 'Empty Castle' Trap

The Sui dynasty, led by Emperor Yang of Sui, attempted to conquer Goguryeo to solidify its dominance in East Asia, but fell victim to Goguryeo's strategic traps and supply shortages. Despite mobilizing massive forces, the Sui army faced devastating defeats, particularly when their detachment was lured into an empty fortress in Pyongyang.

Lim Do-hyun · 2026.09.24

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'Plaintext' Exposed for 30 Seconds During Booting: Fatal Flaw in Aegis Ships and Stealth Fighter Cryptographic Equipment

A fatal flaw has been discovered in the cryptographic equipment responsible for securing cutting-edge weapon systems, including Aegis ships and F-35 stealth fighters, where Level 2 military secrets were exposed in plaintext. Despite initial attempts by the Ministry of National Defense of South Korea to attribute the issue to testing environments, the flaw was eventually acknowledged, raising concerns over both national security and the transparency of massive private contracts.

Han Do-kyung · 2026.09.21