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GUGI, formally the Main Directorate for Deep-Water Research (Glavnoye upravleniye glubokovodnykh issledovaniy), is a secretive Russian state undersea-warfare and deep-sea research directorate. It operates specialized deep-diving naval assets, including the Losharik submarine, and is associated with examining subsea communications cables and other seabed infrastructure for intelligence collection and potential disruption. GUGI submarines have been tracked surveying cables and pipelines in the North Atlantic, including near Norway's Svalbard archipelago. The organization’s activities present an espionage and strategic infrastructure risk in a potential conflict involving NATO, particularly to subsea telecommunications and energy infrastructure.
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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.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
5 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Conducted a Russian naval training exercise simulating the covert deployment of an unspecified weapon intended to disable critical undersea communications cables near Svalbard without attribution.
Surveying and probing undersea cables and pipelines in the North Atlantic as part of seabed infrastructure reconnaissance and pressure activity framed as hybrid warfare risk.
GUGI is known for conducting intelligence gathering and potential disruption operations targeting undersea cable infrastructure, using specialized deep-sea submersibles such as the Losharik submarine.
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.