THREAT ACTOR
MOUNTLOCKER_
UnknownMOUNTLOCKER 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 MOUNTLOCKER, including incident write-ups, attribution notes and additional context, see the Threat Groups archive or run a site search.
Victims by year
- 2021 18
Recent victims
The 50 most recent victims claimed by MOUNTLOCKER. Total in the index: 18.
| Date listed | Victim | Description |
|---|---|---|
| 2021-09-09 | Memry Corporation | |
| 2021-09-09 | ThyssenKrupp System Engineering | |
| 2021-09-09 | Century 3, Inc. | |
| 2021-09-09 | Amey plc | |
| 2021-09-09 | Transtar1 | |
| 2021-09-09 | Wasserstorm | |
| 2021-09-09 | MERSEN | |
| 2021-09-09 | Geotech Engineering and Testing | |
| 2021-09-09 | Laboratorios SMA S.A.C. | |
| 2021-09-09 | ECU Worldwide | |
| 2021-09-09 | Makalot | |
| 2021-09-09 | Gunnebo AB | |
| 2021-09-09 | Enerstar Rentals & Services | |
| 2021-09-09 | Forrester Construction | |
| 2021-09-09 | Dassault Falcon Jet | |
| 2021-09-09 | Homeland Title | |
| 2021-09-09 | FAPS Inc. | |
| 2021-09-09 | Nachi America Inc. |
CONFIRMED ATTACKS
Mountlocker confirmed attacks: 11 verified incidents
Ransomnews has verified 11 Mountlocker 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 August 2020 to March 2021. United States accounts for 4 of them (36%), with victims recorded in 7 countries in total. The most affected sector is manufacturing, at 4 confirmed victims. A ransom payment was publicly confirmed in 0 cases and publicly refused in 2; the outcome is unrecorded in the remaining 9. Where a figure was disclosed (4 cases), these incidents account for 245,826 exposed records.
Confirmed victims by year
Most affected sectors
Most affected countries
Verified Mountlocker incidents
| Date | Organisation | Sector | Location | Records | Ransom paid | Source |
|---|---|---|---|---|---|---|
| March 2021 | Nachi America, Inc. | Manufacturing | Indiana, United States | 300 | Unknown | Source |
| March 2021 | South & City College in Birmingham | Education | Birmingham, United Kingdom | — | Unknown | Source |
| February 2021 | ECU Worldwide | Transportation | Antwerp, Belgium | — | Unknown | Source |
| December 2020 | Datatax Business Services Limited | Finance | Calgary, Canada | 6,100 | Unknown | Source |
| December 2020 | Amey Plc | Construction | London, United Kingdom | — | Unknown | Source |
| November 2020 | Miltenyi Biotec | Other | Gladbach, Germany | — | Unknown | Source |
| October 2020 | SN Servicing Corporation | Finance | California, United States | 170,426 | Unknown | Source |
| October 2020 | Sonoma Valley Healthcare District | Healthcare | California, United States | 69,000 | No | Source |
| September 2020 | Memry | Manufacturing | Connecticut, United States | — | Unknown | Source |
| September 2020 | Makalot | Manufacturing | Taipei, Taiwan | — | Unknown | Source |
| August 2020 | Gunnebo AB | Manufacturing | Göteborg, Sweden | — | No | Source |
Claimed vs confirmed. The figures above the fold on this page come from Mountlocker'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.