THREAT ACTOR
HELLOKITTY_
DormantHELLOKITTY is a ransomware operator tracked through its public data-leak infrastructure. The group operates under the double-extortion model that defines the modern ransomware ecosystem: file encryption combined with the threat of stolen-data publication on a public leak site. It continues to post fresh victim claims as part of an ongoing extortion campaign.
For Ransomnews editorial coverage of HELLOKITTY, including incident write-ups, attribution notes and additional context, see the Threat Groups archive or run a site search.
Leak site mirrors
2 mirrors tracked, 0 currently reachable. These are criminal-infrastructure URLs; links are deliberately not provided.
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CONFIRMED ATTACKS
Hellokitty confirmed attacks: 5 verified incidents
Ransomnews has verified 5 Hellokitty incidents against named organisations, each corroborated by a public source such as a breach notification, regulatory filing or press report. The confirmed record runs from April 2021 to November 2021. United States accounts for 3 of them (60%), with victims recorded in 3 countries in total. The most affected sector is government, at 2 confirmed victims. A ransom payment was publicly confirmed in 0 cases and publicly refused in 4; the outcome is unrecorded in the remaining 1. Where a figure was disclosed (3 cases), these incidents account for 752,788 exposed records.
Confirmed victims by year
Most affected sectors
Most affected countries
Verified Hellokitty incidents
| Date | Organisation | Sector | Location | Records | Ransom paid | Source |
|---|---|---|---|---|---|---|
| November 2021 | Ebara Technologies, Inc. | Technology | California, United States | 1,369 | No | Source |
| August 2021 | Silhouette America, Inc. | Manufacturing | Utah, United States | 897 | No | Source |
| July 2021 | Transnet | Government | Durban, South Africa | — | No | Source |
| July 2021 | Oregon Anesthesiology Group, P.C. | Healthcare | Oregon, United States | 750,522 | Unknown | Source |
| April 2021 | Resort Municipality of Whistler | Government | Whistler, Canada | — | No | Source |
Claimed vs confirmed. The figures above the fold on this page come from Hellokitty's own leak-site postings and reflect what the operation claims. The table here is a separate evidence class: incidents Ransomnews verified against a public source. Confirmed counts are lower than claimed counts by design: most victims never disclose, and some leak-site listings are recycled, exaggerated or fabricated. Records and ransom figures are shown only where a named source disclosed them. See the full ransomware statistics or the Ransomtracker dataset.