Was OAB hit by ransomware?

OAB was listed by the INC Ransom ransomware operation (Brazil), 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 INC Ransom ransomware group?

INC Ransom 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 OAB breach?

INC Ransom published data attributed to OAB. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Ordem dos Advogados do Brasil - São Paulo (OAB-SP)

listed as OAB · Claimed by INC Ransom · listed 5 months ago

Age

since listed · data leaked

Status timeline

ListedJan 23, 2026
Data leakeddate unknown

At a glance

Group: INC Ransom
Status: Data leaked
Country: Brazil
Listed on leak site: Jan 23, 2026

About the victim

AI dossier — public-source company profile

Ordem dos Advogados do Brasil - São Paulo (OAB-SP) is the largest section of the Brazilian Bar Association, representing and supporting legal professionals across the state of São Paulo. It provides services including a legal library, digital certification, information on legal fees, and judicial assistance. The organization also hosts events and conferences focused on legal dialogue, innovation, and the protection of lawyers' rights.

Industry: Legal Professional Association
Address: São Paulo, Brazil

Attack summary

Severity: high — OAB-SP is a major professional regulatory body representing tens of thousands of lawyers in São Paulo; data publication likely involves PII of legal professionals and potentially privileged or sensitive organizational records, constituting significant confirmed exfiltration.

INC Ransom claims to have attacked OAB-SP and has published data (disclosed status: data_published), suggesting exfiltration of organizational and potentially member data. The specific data categories and volume have not been detailed in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Legal professional member records
Digital certification data
Legal fee and judicial assistance information
Organizational administrative data

What the group claims

The Ordem dos Advogados do Brasil - São Paulo serves as the largest section of the Brazilian Bar Association, tirelessly supporting and defending the legal profession. It provides various services including a legal library, digital certification, and public information on legal fees and judicial assistance. OAB SP hosts numerous events and conferences to foster legal dialogue, innovation, and the protection of the rights of lawyers. Its intended clients include legal professionals across São Paulo, as well as the broader community seeking legal assistance and information.

Source

Indexed 5 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.

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Disclosure context

About INC Ransom

INC Ransom is a financially motivated ransomware group that emerged in September 2021 and has since compromised 832 known victims across multiple sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reports, though their operational patterns suggest they likely operate as an independent entity rather than a formal Ransomware-as-a-Service model. While detailed attack methodologies for INC Ransom have not been extensively documented by major security firms, their victim distribution indicates they employ broad-spectrum targeting approaches that have successfully penetrated healthcare, technology, business services, and manufacturing organizations. The group demonstrates a preference for targeting English-speaking countries, with the United States, Canada, and United Kingdom representing their primary victim demographics, alongside significant activity in Germany and Australia. Notable campaigns or high-profile attacks by INC Ransom have not been prominently featured in major threat intelligence publications from CISA, FBI, or leading security researchers, suggesting they may operate with a lower public profile despite their substantial victim count. INC Ransom remains active as of current intelligence assessments, with no documented law enforcement disruptions or confirmed rebranding efforts. The group has been linked to 853 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post June 6, 2026. The operation is currently active.

Also tracked as: INC.

Timeline of this disclosure

January 23, 2026OAB listed by INC Ransomon the group's public leak site

Other recent disclosures by INC Ransom

INC Ransom has been linked to 853 public victims on Darkfield. A sample of the most recent:

See the full INC Ransom dossier →

Sector and geography

Geographically, OAB is reported in Brazil, a country with 319 ransomware disclosures in our corpus.

If your organisation is affected

A listing by INC Ransom means OAB 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.
Monitor for the data appearing on INC Ransom'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.