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Standard Bank

Claimed by PrinzEugen · listed 2 days ago

1.2TB
Data size
154000000 records
2d
Age
since listed · data leaked

Status timeline

  1. ListedJun 15, 2026
  2. Data leakeddate unknown

At a glance

Group
PrinzEugen
Status
Data leaked
Country
South Africa
Sector
Finance/Banking
Listed on leak site
Jun 15, 2026
Data size
1.2TB
Records
154000000

About the victim

AI dossier — public-source company profile

Standard Bank is a major financial institution operating in South Africa, providing banking and financial services to retail and corporate customers.

Industry
Finance/Banking

Attack summary

Severity: critical — Confirmed exfiltration of highly sensitive regulated financial and personal data at massive scale (1.2TB, 154M+ SQL rows) including PII, payment card data, government IDs, and financial records of potentially millions of customers in a highly regulated sector.

PrinzEugen claims to have exfiltrated 1.2TB of data over a 3-week attack beginning February 27th, 2026. The group states negotiations with the bank failed and has published the stolen data, which includes customer PII, employee records, and transactional data.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Customer PII (names, addresses, emails, phone numbers)
  • South African ID numbers
  • Driver's license numbers
  • Passport numbers
  • Credit card numbers
  • Bank account numbers
  • Employee data
  • Customer transactional records
  • Corporate transactional records

What the group claims

3 week long attack beginning February 27th 2026 resulting in exfiltration of 1.2TB of data from internal servers. Peaceful resolution was sought but Standard Bank abandoned negotiations after 2 weeks.

The leak post

captured from the group's site
Beginning on February 27th 2026, The 3 week long attack on both Standard Bank and Liberty has resulted in 1.2TB of data being exfiltrated from internal servers. A peaceful resolution was sought out with Standard Bank, however after 2 weeks of back and forth they made the decision to abandon their customers. The haul of over 154,000,000 rows of exported SQL data includes but is not limited to: Customer PII (Full Names, Addresses, Emails, Phone Numbers, South African ID Numbers, Drivers License Numbers, Passport Numbers, Credit Card Numbers, Account Numbers), Detailed Employee Data, Bulk Customer and Corporate Transactional Data. This campaign has finalized.
  * ⚠ Could not reach file server.

Data the group says was taken

  • Full Names
  • Addresses
  • Emails
  • Phone Numbers
  • South African ID Numbers
  • Drivers License Numbers
  • Passport Numbers
  • Credit Card Numbers
  • Account Numbers
  • Employee Data
  • Corporate Transactional Data
  • Customer Transactional Data
  • SQL Data

Screenshot of the leak post

Leak screenshot for Standard Bank

Sources

Source

Indexed 2 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.

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Disclosure context

About PrinzEugen

PrinzEugen is a relatively obscure ransomware group that first emerged in May 2026, appearing to be financially motivated based on their operational profile. The group's country of origin and potential affiliations with other ransomware operations remain unknown due to limited public reporting and intelligence documentation. With only one documented victim to date, detailed information about PrinzEugen's attack methodology, initial access vectors, and encryption techniques has not been extensively analyzed or publicly documented by major cybersecurity firms or law enforcement agencies. The group has demonstrated a focus on the financial services sector, with their sole known victim located in South Africa, though it is unclear whether this geographic and sectoral targeting represents a deliberate strategy or is simply reflective of their limited observed activity. Given the recent emergence of this group in 2026 and the lack of comprehensive reporting from established threat intelligence sources such as CISA, FBI, or Mandiant, PrinzEugen's current operational status and capabilities remain largely uncharacterized in the public threat landscape. The group has been linked to 8 public disclosures across our corpus. First observed on a leak site on May 4, 2026; most recent post June 15, 2026. The operation is currently active.

Also tracked as: prinz eugen.

Timeline of this disclosure

  • June 15, 2026Standard Bank listed by PrinzEugenon the group's public leak site
Data size
1.2TB
Records
154000000

Other recent disclosures by PrinzEugen

PrinzEugen has been linked to 8 public victims on Darkfield. A sample of the most recent:

See the full PrinzEugen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Finance/Banking sector. Geographically, Standard Bank is reported in South Africa, a country with 52 ransomware disclosures in our corpus.

If your organisation is affected

A listing by PrinzEugen means Standard Bank 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, ECS-CSIRT (South Africa), as required for your jurisdiction.
  • Monitor for the data appearing on PrinzEugen'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.