PH cybersecurity unit issues advisory on Facebook malicious tagging Share on email With reports emerging that local Facebook users are getting tagged by people who are not their “friends”, the country’s National Computer Emergency Response Team (N-CERT) has issued an advisory to prevent becoming a victim of the malicious attack. A Facebook user complained of malicious tagging by another user who is not her friend N-CERT, which is also known as PH-CERT and is the division of the Department of Information and Communications Technology that is responsible responding to computer security incidents in the country, said the tagged posts are believed to be a malicious link that may lead to different attacks.