Black Yak security incident history
Hacking, data breaches and other security incidents involving Black Yak, with related coverage.
Incidents: 1 · Most recent
Black Yak website hack leaks data of over 340,000 customers
342.3kImpact: Names, genders, dates of birth, mobile phone numbers and trailing portions of addresses of 342,253 customers
On 4 March 2025, a hack of Black Yak's website leaked the names, genders, dates of birth, mobile phone numbers and trailing portions of addresses of 342,253 customers. The company blocked the attacking IPs and proxy access IPs and patched vulnerabilities in its website. An investigation found that an administrator account had been taken over through an SQL injection attack, and a fine of 1.391 billion won was imposed for inadequate security measures.
Related reports: 11 · last report →