The Brief 19
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NexusRiver | CISO Intelligence Brief — Issue 40 · July 2, 2026 TLP:AMBER — Limited Disclosure · Recipients May Share Within Their Organization NexusRiver · CISO Intelligence Brief Vol. 2026 · Issue 40 · Thursday, July 2, 2026 The Same-Origin Policy Just Failed. Nobody’s Talking About Why. A thirty-year-old browser boundary broke in four of…