Disclosure context

About Quantum

Quantum is a ransomware group that emerged in September 2021, operating with primarily financial motivations and demonstrating a focus on high-value targets across English-speaking nations. The group's geographic targeting patterns and operational characteristics suggest possible connections to established ransomware ecosystems, though specific attribution or confirmed affiliations with other threat actors remain undocumented in public reporting. Quantum operators typically employ double extortion tactics, combining data encryption with the threat of public data exposure to maximize pressure on victims, and their campaigns have consistently targeted sectors with critical operational dependencies including business services, manufacturing, and information technology infrastructure. The group has maintained a relatively low public profile compared to other major ransomware operations, with their 68 documented victims representing a more selective approach to target acquisition rather than broad-scale campaigns. Despite limited public law enforcement reporting specifically focused on Quantum operations, the group's continued activity pattern suggests they remain an active threat as of recent observations, though comprehensive operational details remain scarce in publicly available threat intelligence reporting. The group has been linked to 68 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post January 16, 2024. The operation is currently inactive.

Also tracked as: QuantumLocker, Mount Locker, DagonLocker.

Timeline of this disclosure

July 19, 2022Delon Hampton & Associates, Chartered listed by Quantumon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Engineering sector, which has 5 disclosures indexed across all operators we track. Geographically, Delon Hampton & Associates, Chartered is reported in United States, a country with 7,392 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

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Delon Hampton & Associates, Chartered

Claimed by Quantum · listed 4 years ago

46m

Age

since listed · data leaked

Status timeline

Listed
Jul 19, 2022
Data leaked

At a glance

Group: Quantum
Status: Data leaked
Country: United States
Sector: Engineering
Listed on leak site: Jul 19, 2022

About the victim

AI dossier — public-source company profile

Delon Hampton & Associates, Chartered is a Washington, D.C.-based engineering consulting firm founded in January 1973 with the objective of building a world-class engineering consultancy. The firm specializes in civil and structural engineering services and is notable as one of the pioneering minority-owned engineering practices in the United States. It serves public and private sector clients across infrastructure, transportation, and facilities projects.

Industry: Engineering Consulting
Employees: 51-200
Founded: 1973

Attack summary

Severity: high — Data has been confirmed published by the threat actor, indicating successful exfiltration of business and potentially sensitive client/employee data from a professional engineering consulting firm with government and infrastructure sector clients.

The Quantum ransomware group claims to have compromised Delon Hampton & Associates, Chartered and has published data, suggesting exfiltration of company data occurred. The status 'data_published' indicates stolen data has been released or is being offered publicly.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal company documents
Engineering project files
Employee records
Client data

What the group claims

In January 1973, Delon Hampton and Associates, Chartered was founded with the sole objective of creating a world-class engineering consulting firm specializing

Source

Indexed 4 years 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.