Back Thebanker

Hacker group claims to have stolen 1.2 terabytes of Standard Bank data

Thebanker • April 17, 2026

A data breach at Standard Bank could result in more than a terabyte of customer data being leaked online, after the bank said it was subject to “unauthorised” third-party access to its data.

A hacker group has claimed to have stolen 1.2 terabytes of Standard Bank’s data, which the bank has said is being leaked online.

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Standard Bank Data Breach: Hackers Release Stolen Customer Data On April 17, 2026, hackers publicly released data stolen from Standard Bank, following a breach disclosed on March 23, 2026. The breach involved unauthorized access to internal systems, exposing client records such as account numbers, business names, and ID numbers. The threat actor, known as Rootboy, claimed to have accessed Standard Bank and its insurer Liberty's systems for over three weeks, exfiltrating approximately 1.2 terabytes of data. Standard Bank confirmed that its core banking systems remained secure and unaffected. The bank is currently engaging with impacted clients and investigating the incident. Security experts warn of an increase in phishing attacks targeting customers due to the exposed personal information. The authenticity of the released data has not yet been independently verified. 4 sources 66

Hacker group claims to have stolen 1.2 terabytes of Standard Bank data

The full story

Extracted Entities

Attack Types (1)

Companies (1)