Disclosure context

About pear

The Pear ransomware group is a relatively new threat actor that emerged in August 2025, operating with primarily financial motivations and targeting victims across multiple countries and sectors. Based on their recent emergence and limited public documentation, specific details about their country of origin and organizational structure remain unclear, though their targeting patterns suggest a financially-driven operation that may operate independently or as part of a smaller ransomware-as-a-service model. With 65 documented victims since their August 2025 debut, the group has demonstrated a preference for targeting organizations in the United States, New Zealand, Australia, Egypt, and Switzerland, with particular focus on healthcare, business services, manufacturing, and technology sectors. Their attack methodology and specific technical details have not been extensively documented by major threat intelligence firms or law enforcement agencies, though their rapid victim acquisition suggests they have established effective initial access and encryption capabilities. Notable campaigns and high-profile attacks have not been publicly detailed by CISA, FBI, or major security research organizations, likely due to the group's recent emergence and relatively small scale compared to established ransomware operations. As of late 2025, Pear appears to remain active given their recent emergence and ongoing victim targeting across multiple geographic regions and industry verticals. The group has been linked to 87 public disclosures across our corpus. First observed on a leak site on August 5, 2025; most recent post May 20, 2026. The operation is currently active.

Timeline of this disclosure

May 10, 2026Langenberg, Strubberg, Arand & King, LLC listed by pearon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, Langenberg, Strubberg, Arand & King, LLC is reported in US, a country with 2,713 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

Langenberg, Strubberg, Arand & King, LLC

Claimed by pear · listed 11 days ago

10d

Age

since listed · data leaked

Status timeline

Listed
May 10, 2026
Data leaked

At a glance

Group: pear
Status: Data leaked
Country: US
Sector: Business Services
Listed on leak site: May 10, 2026

About the victim

AI dossier — public-source company profile

Langenberg, Strubberg, Arand & King, LLC is a CPA firm based in Union, Missouri, offering accounting, tax preparation, tax planning, payroll, bookkeeping, and QuickBooks services to business owners, executives, and independent professionals. The firm serves both individual and business clients with a broad range of financial and advisory services. It operates from a single office location in Union, MO.

Industry: Accounting & Tax Services
Address: 1345 Union Avenue, Suite 1, Union, MO 63084

Attack summary

Severity: critical — The attacker claims exfiltration of regulated sensitive data at scale, including PHI and PII belonging to the firm's clients, as well as financial and HR records. As an accounting firm, client data likely includes highly sensitive tax and financial records for numerous individuals and businesses, meeting the threshold for critical severity.

The group 'pear' claims to have exfiltrated data from the firm including clients' and firm financials, HR records, PII, PHI, partners' and vendors' data, and the QuickBooks database, with the disclosure status marked as data_published.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Firm financial records
Client financial records
HR records
Personally Identifiable Information (PII)
Protected Health Information (PHI)
Partners' data
Vendors' data
QuickBooks database

What the group claims

Firm that specializes in providing accounting, tax, and advisory services

The leak post

captured from the group's site

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Screenshot of the leak post

Leak screenshot for Langenberg, Strubberg, Arand & King, LLC

Sources

Victim sitelsakcpa.com
Leak posthttp://pearsmob5sn44ismokiusuld34pnfwi6ctgin3qbvonpoob4lh3rmtqd.onion/Companies/lsakcpa

Source

Indexed 11 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.