India, July 20 -- Singapore has said it was facing a serious cyber attack on its critical infrastructures by an espionage group that experts believe is linked to China.

Singapore's Coordinating Minister for National Security K. Shanmugam named the attacker on Friday and said it is associated with a state-linked advanced persistent threat (APT) actor.

Shanmugam disclosed that the UNC3886 group was behind the attack.

"UNC3886 poses a serious threat to us, and has the potential to undermine our national security," Shanmugam was quoted as saying by The Straits Times at the Cyber Security Agency of Singapore's (CSA) 10th anniversary dinner at Sands Expo and Convention Centre.

"Even as we speak, UNC3886 is attacking our critical infrastruct...