Was cesmac.edu.br hit by ransomware?

cesmac.edu.br was listed by the krybit 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 krybit ransomware group?

krybit 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 cesmac.edu.br breach?

krybit published data attributed to cesmac.edu.br. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Centro Universitário CESMAC

listed as cesmac.edu.br · Claimed by Krybit · listed 4 days ago

Age

since listed · data leaked

Status timeline

ListedAug 4, 2026
Data leakeddate unknown

At a glance

Group: Krybit
Status: Data leaked
Country: Brazil
Sector: Education
Listed on leak site: Aug 4, 2026

About the victim

AI dossier — public-source company profile

Centro Universitário CESMAC is a private higher education institution operating in Brazil, with multiple campuses including Maceió, Arapiraca, and Palmeira dos Índios. The institution offers undergraduate, postgraduate, and distance learning (EAD) programs.

Industry: Higher Education

Attack summary

Severity: medium — Confirmed data exfiltration from an educational institution handling student and staff PII at scale, but no specific details on data categories, volume, or regulatory sensitivity are provided in the available leak post excerpt.

The Krybit group claims to have breached CESMAC and published exfiltrated data. The group states CESMAC is the largest private higher education institution in Alagoas state.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Student records
Institutional data
Academic systems

What the group claims

Centro Universitário CESMAC (CESMAC University Center) is the largest private higher education institution in the state...

Sources

Source

Indexed 4 days 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About krybit

Krybit is an emerging ransomware group that was first observed in April 2026, operating with apparent financial motivations based on their limited documented attacks against diverse sectors. The group's origin and affiliations remain unclear due to limited public intelligence, and it is unknown whether they operate as a Ransomware-as-a-Service model or as an independent entity. With only four known victims documented across geographically diverse regions including Mexico, Austria, Japan, and Botswana, the group appears to employ broad targeting rather than focused regional or sector-specific campaigns, though their attack methodology, encryption techniques, and data exfiltration practices have not been publicly documented by major security firms or law enforcement agencies. No notable high-profile campaigns or significant ransoms have been publicly reported, and no law enforcement actions against the group have been documented. Given the recent emergence of this group and extremely limited public reporting, Krybit's current operational status and capabilities remain largely unknown to the broader cybersecurity community. The group has been linked to 95 public disclosures across our corpus. First observed on a leak site on April 3, 2026; most recent post August 7, 2026. The operation is currently active.

Timeline of this disclosure

August 4, 2026cesmac.edu.br listed by krybiton the group's public leak site

Other recent disclosures by krybit

krybit has been linked to 95 public victims on Darkfield. A sample of the most recent:

See the full krybit dossier →

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 1,087 disclosures indexed across all operators we track. Geographically, cesmac.edu.br is reported in Brazil, a country with 207 ransomware disclosures in our corpus.

If your organisation is affected

A listing by krybit means cesmac.edu.br 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, CERT.br (Brazil), as required for your jurisdiction.
Monitor for the data appearing on krybit'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.