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UNC6688 is a threat cluster attributed to a compromise of infrastructure used to serve Notepad++ updates during 2025. The activity is associated with a traditional software supply chain intrusion affecting update distribution rather than broad open-source ecosystem abuse. Observed victimology indicates intentionally limited targeting, with confirmed affected organizations in South Korea and France. Available reporting supports that this operation formed part of a small set of narrowly scoped supply chain compromises identified in 2025 and early 2026. High-confidence details about UNC6688’s malware, follow-on objectives, and full intrusion lifecycle remain limited in the available information, so its precise tradecraft and dominant motivation cannot be stated beyond its use of software update infrastructure as an initial access vector against selected targets.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Geographies tied to known operations.
2 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.