The document discusses several advanced persistent threat (APT) actors and their activities. It describes how the Naikon APT group exploited the 2014 disappearance of Malaysia Airlines Flight 370 to launch spear-phishing attacks against government agencies in several Asian countries. It also outlines attacks conducted by the "Hellsing" APT group since 2012 against targets in Asia Pacific nations, primarily through spear-phishing emails containing malicious archive files and screenshots. The document provides advice on identifying infection and recommends security best practices for preventing such APT attacks.