In this session, we'll be talking about an APT group that targets organizations in Taiwan -- the Tropic Trooper, which is dubbed "Earth Centaur" by Trend Micro. As our research shows, this group has targeted multiple government agencies and transportation companies using customized backdoors such as SmileSvr, ChiserClient, and Lilith RAT tailored to individual targets. According to our observation, this campaign has been going on for at least over a year now.