Disclosure context

About Cryptbb

Cryptbb is a relatively obscure ransomware group that emerged in September 2023, appearing to be financially motivated based on their operational patterns. Little is publicly documented about their origin or potential affiliations, though their limited scale of operations with only 8 known victims suggests they operate as a smaller independent group rather than a sophisticated ransomware-as-a-service operation. Their attack methodology and specific technical capabilities remain largely undocumented in public threat intelligence reporting, with no detailed analysis available from major security firms regarding their initial access vectors, encryption methods, or whether they employ data exfiltration tactics. The group has demonstrated a geographic focus primarily targeting victims across the United States, United Kingdom, India, and Poland, though no specific high-profile campaigns or notable incidents have been publicly reported by law enforcement or security researchers. Given the limited public reporting and recent emergence, Cryptbb appears to remain a low-profile threat actor with current activity status unclear due to insufficient public documentation. The group has been linked to 8 public disclosures across our corpus. First observed on a leak site on September 15, 2023. The operation is currently inactive.

Timeline of this disclosure

September 15, 2023Danbury Public Schools listed by Cryptbbon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 694 disclosures indexed across all operators we track. Geographically, Danbury Public Schools 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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Danbury Public Schools

Claimed by Cryptbb · listed 3 years ago

32m

Age

since listed · data leaked

Status timeline

Listed
Sep 15, 2023
Data leaked

At a glance

Group: Cryptbb
Status: Data leaked
Country: United States
Sector: Education
Listed on leak site: Sep 15, 2023

About the victim

AI dossier — public-source company profile

Danbury Public Schools is a public K-12 school district headquartered in Danbury, Connecticut. The district operates numerous elementary, middle, and high schools, as well as early childhood, adult education, and alternative learning programs. It serves a large urban community in Fairfield County, Connecticut.

Industry: K-12 Public Education
Address: Danbury, Connecticut, United States
Employees: 1001-5000

Attack summary

Severity: high — A K-12 public school district holds substantial volumes of regulated PII including minor students' educational and health records (FERPA/HIPAA-adjacent), employee data, and financial information. The disclosed status is 'data_published', indicating confirmed exfiltration and public release of sensitive data at scale involving minors.

The Cryptbb ransomware group claims to have attacked Danbury Public Schools and the disclosure status indicates data has been published, though the leak post itself contains no explicit description of encryption or exfiltration methods, nor details of the data stolen.

high

Data the group says was taken

AI dossier — extracted from the leak post

Student records
Employee/HR records
Financial records
Health services data
Family and community contact information
Administrative documents

What the group claims

Danbury Public Schools is a school district headquartered in Danbury, Connecticut. In 2006 Eddie Davis retired from being superintendent. Salvatore Pascarella succeeded Davis that year.https://www.danbury.k12.ct.us/

Sources

Victim sitedanbury.k12.ct.us
Leak posthttp://basemmnnqwxevlymli5bs36o5ynti55xojzvn246spahniugwkff2pad.onion/company/7890201

Source

Indexed 3 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.