Was AliveCor, Inc. hit by ransomware?

AliveCor, Inc. was listed by the direwolf ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the direwolf ransomware group?

direwolf is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the AliveCor, Inc. breach?

direwolf published data attributed to AliveCor, Inc.. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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AliveCor, Inc.

Claimed by Direwolf · listed 7 days ago

Age

since listed · data leaked

Status timeline

ListedAug 10, 2026
Data leakeddate unknown

At a glance

Group: Direwolf
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Aug 10, 2026

About the victim

AI dossier — public-source company profile

AliveCor, Inc. develops AI-enabled, machine learning-powered ECG (electrocardiogram) sensors and digital health platforms for remote cardiac monitoring. The company provides personal ECG devices (Kardia product line), enterprise solutions for health systems, clinical trial monitoring for biopharma, and cardiac health management services for payers and employers. They serve consumers, healthcare providers, and institutional customers across 40+ countries.

Industry: Medical Device & Artificial Intelligence

Attack summary

Severity: critical — AliveCor handles sensitive health data including ECG readings and patient medical records at scale (3M+ lifetime users). The post explicitly flags GDPR-restricted data, indicating confirmed exfiltration of regulated personal data from EU residents. Healthcare data breaches involving cardiac/medical information represent critical regulatory and patient safety risk.

The direwolf group claims to have exfiltrated data from AliveCor. The leak post indicates GDPR-restricted data is involved, suggesting personal data of EU residents or European operations. No specific operational disruption or encryption claim is stated in the post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Personal health information (ECG data)
Patient identifiers
Clinical records
Healthcare provider data
Potentially PII of EU residents (GDPR-flagged)

What the group claims

medical device and artificial intelligence

The leak post

captured from the group's site

```
{"article":{"id":71,"title":"AliveCor, Inc.","content":"","summary":"{\"company_name\":\"AliveCor, Inc.\",\"company_website\":\"https://alivecor.com\",\"industry\":\"medical device and artificial intelligence\",\"gdpr_restricted\":true,\"data_size\":\"\"}","country":"US","file_browser_url":"","data_types":"4,11,16,20,22,25,27,29,30","countdown_end":"2026-08-31T23:59:00Z","status":"","view_count":0,"publish_time":"2026-08-10T18:26:14.489475764Z","created_at":"2026-08-10T18:26:14.489476154Z","updated_at":"2026-08-10T18:26:14.489476154Z"}}
```

Sources

Victim sitealivecor.com
Leak posthttp://direwolfcdkv5whaz2spehizdg22jsuf5aeje4asmetpbt6ri4jnd4qd.onion/api/public/articles/71

Source

Indexed 7 days 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 direwolf

Direwolf is a ransomware group that emerged in May 2025 with primarily financial motivations, having targeted 71 known victims across multiple sectors and geographic regions. The group's origin and potential affiliations remain undocumented in public threat intelligence reports, with no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major cybersecurity firms or government agencies, though their targeting patterns indicate a focus on manufacturing, technology, healthcare, and transportation/logistics sectors across Malaysia, the United States, Thailand, Singapore, and Taiwan. No major high-profile campaigns or significant ransomware demands have been publicly attributed to this group by CISA, FBI, or established security researchers such as Mandiant. Given the group's recent emergence and limited public documentation, their current operational status and long-term threat posture remain unclear, requiring continued monitoring by the cybersecurity community to establish a more comprehensive threat profile. The group has been linked to 96 public disclosures across our corpus. First observed on a leak site on May 27, 2025; most recent post August 17, 2026. The operation is currently active.

Also tracked as: DIRE WOLF.

Timeline of this disclosure

August 10, 2026AliveCor, Inc. listed by direwolfon the group's public leak site

Other recent disclosures by direwolf

direwolf has been linked to 96 public victims on Darkfield. A sample of the most recent:

See the full direwolf dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,608 disclosures indexed across all operators we track. Geographically, AliveCor, Inc. is reported in United States, a country with 3,162 ransomware disclosures in our corpus.

If your organisation is affected

A listing by direwolf means AliveCor, Inc. 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 direwolf'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.