Washington: At least one connection opened by Chinese state-sponsored hackers into the network system of an Indian port is still active, even as authorities block attempts to penetrate the South Asian nation’s electrical sector, according to the US firm that alerted officials. As of Tuesday, Recorded Future could see a ‘handshake’ - indicating an exchange of traffic - between a China-linked group and an Indian maritime port, said Stuart Solomon, the firm’s chief operating officer. Recorded Future calls the group RedEcho and says it had targeted as many as 10 entities under India’s power grid as well as two maritime ports when the company first notified India’s Computer Emergency Response Team on February 10. Most of these connections were still operational as recently as February 28, Solomon said.