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Blackout is a ransomware extortion group first observed in late February 2024. It operates a leak site and publicly names victims as part of a double-extortion model, combining data theft claims with pressure to pay through threatened publication. Reported victimology indicates opportunistic targeting across multiple countries and sectors rather than a narrowly focused campaign. Early known targeting included healthcare organizations in Canada, France, and Germany, followed by victims in telecommunications in Mexico, manufacturing in Croatia, and additional organizations in technology, travel-related services, and retail or brand-management contexts. Blackout is primarily associated with ransomware-driven data breach and extortion activity. Its observed tradecraft includes compromising organizations, claiming exfiltration of data, and using leak-site postings and deadlines to coerce payment. Public reporting currently provides limited high-confidence detail on its malware lineage, initial access methods, post-compromise tooling, affiliate structure, or any confirmed state sponsorship. There is no reliable basis to characterize Blackout as a nation-state actor. The group is known under the name Blackout, with no broadly established alternate aliases evident from the available information. Blackout should be tracked as an emerging ransomware actor active since 2024, notable for geographically diverse victim claims and standard leak-site-based extortion operations.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
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.
1 distinct technique observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Conducting a ransomware attack against Bluebell Group, with a leak deadline indicating likely extortion/data leak activity.
Conducting a ransomware attack against Miatech, a US-based organization.
Conducting a ransomware attack against Yano Electronics Ltd. (yano.tokyo), a technology-sector organization in Japan.
Blackout is a ransomware group active since February 2024, targeting healthcare, telecommunications, and manufacturing sectors in multiple countries.
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.