Lockdata is a ransomware group that emerged in September 2021, operating with primarily financial motivations through targeted attacks against organizations. The group appears to operate independently with limited public information available regarding their country of origin or affiliations with other cybercriminal organizations. Based on available intelligence, Lockdata has demonstrated a preference for targeting financial sector organizations, though their specific attack methodologies, initial access vectors, and encryption techniques remain largely undocumented by major security researchers and government agencies. The group has claimed responsibility for five known victims, with their operations primarily focused on targets in the United Kingdom and United States. Due to the limited public reporting on this group's activities, details regarding notable high-profile campaigns, ransom demands, or significant law enforcement actions are not available through established threat intelligence sources. The current operational status of Lockdata remains unclear given the sparse public documentation of their recent activities. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on September 9, 2021. The operation is currently inactive.
Sector and geography
Geographically, [CHINA] TCL China Star Optoelectronics Technology Co., Ltd is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.
If your organisation is affected
A listing by Lockdata means [CHINA] TCL China Star Optoelectronics Technology Co., Ltd appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.
- Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
- Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
- Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
- Report the incident to your national CERT, NCSC (United Kingdom), as required for your jurisdiction.
- Monitor for the data appearing on Lockdata's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.
How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.
