[APT5](https://attack.mitre.org/groups/G1023) is a China-based espionage actor that has been active since at least 2007 primarily targeting the telecommunications, aerospace, and defense industries throughout the U.S., Europe, and Asia. [APT5](https://attack.mitre.org/groups/G1023) has displayed advanced tradecraft and significant interest in compromising networking devices and their underlying software including through the use of zero-day exploits.(Citation: NSA APT5 Citrix Threat Hunting December 2022)(Citation: Microsoft East Asia Threats September 2023)(Citation: Mandiant Pulse Secure Zero-Day April 2021)(Citation: Mandiant Pulse Secure Update May 2021)(Citation: FireEye Southeast Asia Threat Landscape March 2015)(Citation: Mandiant Advanced Persistent Threats)
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