India, Dec. 2 -- GPS spoofing signals were received over the past month at the Delhi, Mumbai, Chennai and other airports although no flight movements were affected, civil aviation minister Ram Mohan Naidu told Parliament on Monday. GPS spoofing entails sending fake satellite signals to trick a navigation system into showing the wrong position, speed or time. Unlike jamming, which floods the spectrum on which GPS satellites function, spoofing feeds aircraft false but convincing navigation data.P6...