APT / THREAT GROUP🕵️ ESPIONAGEADVANCED

APT6

🇨🇳China-attributed
1
campaigns
2
aliases
Last seen:Mar 17, 2026

Intelligence Profile

The FBI issued a rare bulletin admitting that a group named Advanced Persistent Threat 6 (APT6) hacked into US government computer systems as far back as 2011 and for years stole sensitive data.

The FBI alert was issued in February and went largely unnoticed. Nearly a month later, security experts are now shining a bright light on the alert and the mysterious group behind the attack.

“This is a rare alert and a little late, but one that is welcomed by all security vendors as it offers a chance to mitigate their customers and also collaborate further in what appears to be an ongoing FBI investigation,” said Deepen Desai, director of security research at the security firm Zscaler in an email to Threatpost.

Details regarding the actual attack and what government systems were infected are scant. Government officials said they knew the initial attack occurred in 2011, but are unaware of who specifically is behind the attacks.

“Given the nature of malware payload involved and the duration of this compromise being unnoticed – the scope of lateral movement inside the compromised network is very high possibly exposing all the critical systems,”Deepen said.

Threat Analysis

APT6 is a advanced-sophistication threat actor attributed to China, engaged in cyber operations with a primary motivation of espionage.

The group's espionage-oriented operations suggest a state-sponsored or state-aligned mandate, typically focused on stealing intellectual property, government secrets, or military intelligence. Targets are usually selected for strategic value rather than financial gain.

Classified as an advanced threat actor, APT6 likely develops or acquires zero-day exploits, employs custom malware toolchains, and demonstrates long-term persistence capabilities — hallmarks of a well-resourced operation consistent with nation-state backing.

Known Campaigns

APT6 — Active Operations March 2026

APT6 is a espionage threat actor attributed to China. The FBI issued a rare bulletin admitting that a group named Advanced Persistent Threat 6 (APT6) hacked into US government computer systems as far back as 2011 and for years stole sensitive data. The FBI alert was issued in February and went largely unnoticed. Nearly a month later...

ACTIVEHIGH2026

External References

Quick Facts

TypeAPT / Threat Group
Motivation🕵️ espionage
Sophisticationadvanced
Origin🇨🇳 China
Aliases2
SourceMalpedia

Also Known As

APT61.php Group

Research Links

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.