Was cityofpleasantonca.gov hit by ransomware?

cityofpleasantonca.gov was listed by the ValenciaLeaks ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the ValenciaLeaks ransomware group?

ValenciaLeaks is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the cityofpleasantonca.gov breach?

ValenciaLeaks published data attributed to cityofpleasantonca.gov (~283 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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City of Pleasanton

listed as cityofpleasantonca.gov · Claimed by ValenciaLeaks · listed 2 years ago

283 GB

Data size

22m

Age

since listed · data leaked

Status timeline

ListedSep 10, 2024
Data leakeddate unknown

At a glance

Group: ValenciaLeaks
Status: Data leaked
Country: United States
Sector: Government
Listed on leak site: Sep 10, 2024
Data size: 283 GB

About the victim

AI dossier — public-source company profile

The City of Pleasanton is a municipal government entity in Alameda County, California, providing public services including police, fire, water, planning, parks, and community programs to residents. The city operates various departments including finance, human resources, public works, and community & economic development.

Industry: Local Government / Municipal Administration
Address: Pleasanton, California, United States
Employees: 200-500

Attack summary

Severity: critical — Government entity targeted with confirmed exfiltration of 283 GB and published data disclosure. Municipal data typically includes PII, financial records, and operational infrastructure information affecting public services and resident safety.

ValenciaLeaks claims to have exfiltrated 283 GB of data from the City of Pleasanton on 10 September 2024. The group has published the data, indicating both encryption and data exfiltration of municipal government records.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Municipal records
City council documents
Finance and budget data
Human resources files
Police and emergency services records
Public works data
Water utility information
Resident and permit application data

What the group claims

Data Exfiltrated : 283GB - Leak Date : 10.09.2024:03:06

Sources

Victim sitecityofpleasantonca.gov
Leak posthttp://6doyqxqqj36vnedtt2zwxmngx52mgyp7brbrtwkyd75jgiolocoybgid.onion/post/cityofpleasantonca.gov

Source

Indexed 2 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.

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Disclosure context

About ValenciaLeaks

ValenciaLeaks is a recently emerged ransomware group first observed in September 2024, operating with apparent financial motivations and targeting a diverse range of sectors across multiple countries. The group's origin and affiliations remain largely undocumented by major cybersecurity organizations, though their targeting pattern suggests a geographically diverse operational scope spanning the United States, Malaysia, Luxembourg, Bangladesh, and Spain. Based on limited available intelligence, ValenciaLeaks appears to focus on opportunistic targeting across business services, healthcare, manufacturing, and government sectors, with at least five confirmed victims documented since their emergence. The group's specific attack methodologies, including initial access vectors, encryption techniques, and whether they employ data exfiltration tactics prior to encryption, have not been comprehensively analyzed or reported by established threat intelligence sources such as CISA, FBI, or major security research organizations. No major high-profile campaigns, significant ransom demands, or law enforcement disruption activities have been publicly documented regarding this group. The current operational status of ValenciaLeaks remains unclear due to the limited public intelligence available, though their recent emergence suggests they may still be in early operational phases. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on September 10, 2024; most recent post September 18, 2024. The operation is currently inactive.

Also tracked as: valencia leaks.

Timeline of this disclosure

September 10, 2024cityofpleasantonca.gov listed by ValenciaLeakson the group's public leak site

Data size: 283 GB

Other recent disclosures by ValenciaLeaks

ValenciaLeaks has been linked to 5 public victims on Darkfield. A sample of the most recent:

See the full ValenciaLeaks dossier →

Sector and geography

This disclosure adds to ransomware activity in the Government sector, which has 685 disclosures indexed across all operators we track. Geographically, cityofpleasantonca.gov is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by ValenciaLeaks means cityofpleasantonca.gov appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on ValenciaLeaks's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.