ESET's APT Activity Report Q4 2023-Q1 2024 summarizes observations of various advanced persistent threat (APT) groups documented by ESET researchers between October 2023 and March 2024. Their observations highlight the broader threat landscape investigated during this period of time and details trends, developments and tooling used by these threat actors. The public report proclaims to contain a fraction of what private ESET customers receive. China Chinese-aligned cyber espionage groups have traditionally targeted public facing applications for obtaining initial access on a target network. In many campaigns investigated by ESET and others, the groups leveraged one-day vulnerabilities against a range of appliances and software including VPNs, firewalls, Confluence, Exchange, and others. See ESETs report linked below for their detailed analysis on Chinese threat activity. Middle East According to ESET's research, a potentially Iranian-aligned threat group BladedFeline continued...