USS John S. McCain (L) off Singapore's Changi Naval Base. Photo: Xinhua USS John S. McCain (L) off Singapore's Changi Naval Base. Photo: Xinhua
USS John S. McCain (L) off Singapore's Changi Naval Base. Photo: Xinhua

US Navy collisions stoke cyber threat fears that GPS systems can be ‘spoofed’ by hackers

John S. McCain collision off Singapore is US Navy’s fourth incident this year

USS John S. McCain (L) off Singapore's Changi Naval Base. Photo: Xinhua USS John S. McCain (L) off Singapore's Changi Naval Base. Photo: Xinhua
USS John S. McCain (L) off Singapore's Changi Naval Base. Photo: Xinhua
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