Deputy Secretary for Security Apollonia Liu will head up the government’s PR department from Friday, replacing Fletch Chan as the Information Services Department (ISD) chief. Liu does not have a background in media, communications or PR. She has been serving as a deputy security chief since 2018, following a seven-year stint as the deputy director of administration and development at the Department of Justice. She joined the Administrative Service in August 1990, rising through the ranks and becoming an Administrative Officer in April 1990, according to a government press release on Friday. Du…