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MEMSIC

Claimed by Abyss · listed 1 month ago

1.3 TB
Data size
40d
Age
since listed · data leaked

Status timeline

  1. ListedAug 27, 2026
  2. Data leakeddate unknown

At a glance

Group
Abyss
Status
Data leaked
Country
United States
Sector
Technology/Manufacturing
Listed on leak site
Aug 27, 2026
Data size
1.3 TB

About the victim

AI dossier — public-source company profile

MEMSIC Semiconductor Co., Ltd., founded in 1999 and headquartered in Massachusetts, designs and manufactures MEMS sensors including accelerometers, magnetometers, Hall switches, and 6-axis IMUs. The company serves automotive, industrial, IoT, medical, and consumer applications with a global distribution network and over 4 billion chips shipped.

Industry
Semiconductor & MEMS Sensors
Address
Massachusetts, US (headquarters); operations in Shanghai, Wuxi, Shenzhen, Tianjin
Founded
1999

Attack summary

Severity: high — Confirmed exfiltration of 1.3 TB of data from a semiconductor design and manufacturing company with significant supply-chain implications. The threat to publish passwords and unspecified corporate data poses risk to intellectual property, employee information, and operational systems. Lack of explicit proof files in the post does not negate the confirmed breach and threatened disclosure.

The Abyss group claims to have exfiltrated data from MEMSIC and states that 'password and data will be published later,' indicating a confirmed breach with threatened disclosure. The attack details are minimal; the post does not explicitly specify what data types or operational systems were compromised.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Unspecified corporate data
  • Passwords

What the group claims

Founded in 1999, MEMSIC is a company that designs, manufactures Flow sensors, Accelerometers, Sensing technology, Inertial systems, Magnetometers, Tilt sensors. MEMSIC is located in Massachusetts.

The leak post

captured from the group's site
```
let data = [
{
        'title' : 'MEMSIC',
        'short' : 'memsic.com ',
        'full' : 'MEMSIC  <br>' +
                 'Founded in 1999, MEMSIC is a company that designs, manufactures Flow sensors, Accelerometers, Sensing technology, Inertial systems, Magnetometers, Tilt sensors. MEMSIC is located in Massachusetts.<br>'+
            'password and data will be published later <br>'+
            'Link â„–1 Filelist',
        'links' : [

        ]
},
{
        'title' : 'School Facility Consultants',
        'short' : 's-f-c.org 1.3Tb uncompressed data',
        'full' : 'School Facility Consultants <br>' +
                 'School Facility Consultants (SFC) is a full-service company that provides expert guidance in school facility planning and funding for School Districts, County Offices of Education, and Charter Schools across California.<br>'+
            'password: xrbcNcEkiCiBwARy5LQpAXIdUpG2hWxSxppkmORwf8XlcFts8pGTQQpaPZbRIHxMoWKNyLbylJw5Fgmz5cXg3lfdrcvEgXc2iN2c66Jt10JgmiU9K5arKZl7qWxpmDhQ <br>'+
            'Link â„–1 Filelist',
        'links' : [
            "http://44ga7x7kicz2bbxaohdfw5iw6j7dgg4kyctwtf4kh6gsxifbah4jv4ad.onion/sfc.lst.zip",
            "http://4…

Screenshot of the leak post

Leak screenshot for MEMSIC

Sources

Source

Indexed 1 month ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Abyss

Abyss is a relatively new ransomware group that emerged in March 2023, operating with primarily financial motivations and targeting organizations across multiple sectors with a focus on English-speaking countries. The group's origin and affiliations remain largely undocumented by major security agencies, though their targeting patterns suggest they operate independently rather than as a Ransomware-as-a-Service model. Their attack methodology and specific tools have not been extensively documented by major threat intelligence firms, though their victim profile of 87 organizations indicates they employ effective initial access techniques to compromise business services, technology, healthcare, and agriculture sectors. The group demonstrates a clear geographic preference for targets in the United States, United Kingdom, Canada, Switzerland, and Hong Kong, suggesting either language preferences or specific regional access capabilities. Due to the group's recent emergence and relatively limited public documentation from established security researchers, detailed information about notable campaigns, encryption methods, or law enforcement actions remains scarce. Abyss appears to remain active as of current reporting, though the lack of extensive public analysis by major threat intelligence organizations suggests they may operate at a smaller scale compared to more prominent ransomware families. The group has been linked to 107 public disclosures across our corpus. First observed on a leak site on March 21, 2023; most recent post September 2, 2026. The operation is currently active.

Timeline of this disclosure

  • August 27, 2026MEMSIC listed by Abyss on the group's public leak site
Data size
1.3 TB

Other recent disclosures by Abyss

Abyss has been linked to 107 public victims on Darkfield. A sample of the most recent:

See the full Abyss dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology/Manufacturing sector. Geographically, MEMSIC is reported in United States, a country with 3,175 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Abyss means MEMSIC 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, CISA (United States), as required for your jurisdiction.
  • Monitor for the data appearing on Abyss'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.