Disclosure context

About devman

The devman ransomware group is a recently emerged threat actor that began operations in April 2025, demonstrating a financially motivated criminal enterprise with a focus on opportunistic targeting across multiple sectors and geographic regions. Given the group's recent emergence and limited public documentation, specific details regarding their country of origin, organizational structure, or potential affiliations with established ransomware-as-a-service operations remain unknown to major cybersecurity agencies and researchers. The group's attack methodology and technical capabilities have not been thoroughly documented by reputable security firms, though their targeting patterns suggest a broad opportunistic approach rather than highly specialized tactics. In the brief period since their emergence, devman has reportedly compromised 184 victims across diverse sectors including technology, healthcare, public sector organizations, and agriculture and food production, with primary targeting concentrated in the United States, France, Svalbard and Jan Mayen, Taiwan, and Thailand, though the inclusion of Svalbard and Jan Mayen in their targeting list may indicate data collection anomalies rather than actual operational focus on this remote Arctic territory. As of current reporting, devman appears to remain an active threat, though the lack of detailed technical analysis or law enforcement advisories suggests they may be operating at a relatively low profile compared to more established ransomware groups. The group has been linked to 184 public disclosures across our corpus. First observed on a leak site on April 6, 2025; most recent post February 4, 2026. The operation is currently active.

Timeline of this disclosure

January 12, 2026sealbeachca.gov listed by devmanon the group's public leak site

Data size: 300 GB

Sector and geography

This disclosure adds to ransomware activity in the Public Sector sector, which has 259 disclosures indexed across all operators we track. Geographically, sealbeachca.gov 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

← All victims

City of Seal Beach

listed as sealbeachca.gov · Claimed by devman · listed 4 months ago

300 GB

Data size

Age

since listed · data leaked

Status timeline

Listed
Jan 12, 2026
Data leaked

At a glance

Group: devman
Status: Data leaked
Country: United States
Sector: Public Sector
Listed on leak site: Jan 12, 2026
Data size: 300 GB

About the victim

AI dossier — public-source company profile

The City of Seal Beach is a municipal government entity located in Seal Beach, California, serving the local community through departments including Police, Fire, Public Works, Community Development, Finance, and Recreation. It operates City Hall, public utilities, marine safety services, and various community programs. The city is situated in Orange County, California.

Industry: Municipal Government
Address: City Hall, 211 Eighth Street, Seal Beach, CA 90740, United States

Attack summary

Severity: high — Confirmed exfiltration and publication of 300 GB of data from a municipal government entity, including government documents and property deeds. While regulated PII at scale is not explicitly confirmed, the public-sector nature and volume of data—including deeds and government records—represent significant exposure of civic and potentially personal data.

The group 'devman' claims to have exfiltrated approximately 300 GB of data from the City of Seal Beach, stating the stolen data includes government documents, property deeds, and additional unspecified materials. The disclosed status indicates the data has been published.

high

Data the group says was taken

AI dossier — extracted from the leak post

Government documents
Property deeds
Unspecified municipal records

What the group claims

Datatheft 300gb of data stollen includes gov documents, deeds and much more

Sources

Victim sitesealbeachca.gov
Leak posthttp://devmanblggk7ddrtqj3tsocnayow3bwnozab2s4yhv4shpv6ueitjzid.onion

Source

Indexed 4 months 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.