Disclosure context

About apt73

APT73 is a recently emerged ransomware group that began operations in April 2024, with financial motivation as their primary driver based on their targeting patterns across multiple high-value sectors. The group has demonstrated rapid growth in their operational tempo, accumulating 78 documented victims within their first months of activity. Their targeting methodology shows a preference for English-speaking markets and major economies, with the United Kingdom and United States representing their primary focus areas, followed by significant activity in India, Brazil, and France. The group exhibits a clear preference for high-value sectors including business services, technology, financial services, and healthcare organizations, suggesting a calculated approach to victim selection based on potential payment capability and operational impact. Given the group's recent emergence and limited public documentation from major threat intelligence sources, specific details regarding their initial access vectors, tooling, encryption methods, or organizational structure remain largely unconfirmed by authoritative sources such as CISA, FBI, or established security research firms. The group's current operational status appears active based on the timeline of their emergence, though comprehensive analysis of their capabilities and infrastructure requires additional intelligence gathering and documentation by security researchers. The group has been linked to 141 public disclosures across our corpus. First observed on a leak site on April 22, 2024; most recent post April 27, 2026. The operation is currently inactive.

Also tracked as: Eraleign.

Timeline of this disclosure

April 27, 2026pindrophearing.co.uk listed by apt73on the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, pindrophearing.co.uk is reported in GB, a country with 309 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

← All victims

Pindrop Hearing

listed as pindrophearing.co.uk · Claimed by apt73 · listed 24 days ago

23d

Age

since listed · data leaked

Status timeline

Listed
Apr 27, 2026
Data leaked

At a glance

Group: apt73
Status: Data leaked
Country: GB
Sector: Healthcare
Listed on leak site: Apr 27, 2026

About the victim

AI dossier — public-source company profile

Pindrop Hearing is a CQC-registered independent audiology practice based in London, UK, operating multiple clinics including Harley Street, Winchmore Hill, Chelsea, and Spire Bushey Hospital. The practice offers comprehensive hearing assessments, hearing aid fitting, ear wax removal, paediatric audiology, tinnitus rehabilitation, and vestibular assessments. It holds over 900 Google reviews averaging 4.9/5 and has over 20 years of clinical experience.

Industry: Audiology & Hearing Healthcare
Address: 41 Harley Street, London W1G 8QH

Attack summary

Severity: critical — Pindrop Hearing is a CQC-regulated healthcare provider handling sensitive patient medical and audiological data including minors (paediatric audiology). Data publication by the threat actor confirms exfiltration of regulated health information (special category data under UK GDPR/NHS frameworks), meeting the critical threshold.

The ransomware group APT73 claims to have attacked Pindrop Hearing and has published data (disclosed status: data_published), asserting access to information held by this CQC-registered audiology provider. The specific data exfiltrated or encrypted is not detailed in the truncated leak post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient health records
Audiological assessment data
Personal contact information
Referral and clinical correspondence
Financial/payment records

What the group claims

We’re specialists in the diagnosis and treatment of hearing conditions, but just as important i...

Sources

Victim sitepindrophearing.co.uk
Leak posthttp://basherq53eniermxovo3bkduw5qqq5bkqcml3qictfmamgvmzovykyqd.onion/page_company.php?id=53

Source

Indexed 24 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.