The Ministry of Manpower (MOM) has filed a report with the police after it found a duplicate of its corporate website www.momgov.sg, said Mr Tan Chuan-Jin, the Acting Minister for Manpower.
In a post on Facebook on Friday, he said members of the public should only use the official MOM website for all "informational and transactional needs concerning MOM matters".
"At the same time, we would also like to assure everyone that access to the official MOM website remains unaffected," he wrote, adding that no data has been compromised.
Investigations are ongoing.
Hackers again?