Hack of AI training contractor leaks Samsung Electronics staff data
SpilloverSpillover from the Day1 Company incident · View original incident →Day1 Company, a contracted AI training provider, was hacked, leaking Samsung Electronics employee information. The timing of the incident, the scale of the leak and the response measures have not been confirmed.
Key facts
- Affected organisation
- Samsung Electronics
- Original incident
- Day1 Company hack leaks students' and instructors' personal data
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- Not confirmed
- Cause / method
- Hack of contracted AI training provider Day1 Company
- Location
- South Korea
If your data was exposed
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
- If you’ve suffered harm, report it. Call 118 (no area code) for privacy violations, contact the police for financial losses, and apply for dispute mediation to seek compensation.Personal Information Infringement Report Centre ↗Korean National Police Agency cybercrime report ↗Personal Information Dispute Mediation Committee ↗
Timeline
- It came to light that Samsung Electronics employee information had been leaked as a result of the Day1 Company hack.
Original incident
This is spillover from the Day1 Company incident.
Day1 Company hack leaks students' and instructors' personal data
In June 2026, personal data was leaked in a hack of Day1 Company, the operator of Fast Campus, and damage to information on instructors and employees of Samsung, LG and Kakao was also confirmed. The leaked items included passwords and phone numbers, and a further leak of card and account information later came to light. Day1 Company said early on that it was assessing the scale of the damage, and criticism was later raised over its response and lack of communication.
Related reports: 11 · last report →
1 related reports
Other incidents at Samsung Electronics
Allegations of unauthorised lookup and leak of Samsung Electronics employee data
Allegations were raised that a Samsung Electronics employee had accessed and leaked colleagues' personal information without authorisation. Samsung Electronics filed a criminal complaint against the employee, and it came to light that 20,000 records had been viewed in one hour. Later, in a personal data leak case related to union membership, six people, including the chair of the Super-Enterprise Union, were referred to prosecutors.
Related reports: 7 · last report →Fine finalised over Samsung data leak exposed by celebrity phone hacks
A fine in the hundreds of millions of won was finalised over Samsung's personal data leak, which came to light through the hacking of celebrities' mobile phones. The scale of the leak, the date of the incident and the specific attack method have not been confirmed.
Read on 한겨레 ↗LANDFALL spyware exploits zero-day to compromise Galaxy phones
Impact: Information including photos on Galaxy phones
The LANDFALL spyware exploited a zero-day vulnerability to hack Samsung Galaxy phones. The compromise lasted 10 months, and information including photos was shared externally.
Related reports: 2 · last report →Samsung patches flaw exploited to hack customers' phones
A zero-day security vulnerability was exploited to hack Samsung Electronics customers' mobile phones. Samsung Electronics released a patch to fix the vulnerability. The scale of the damage and the countries where individual victims are located have not been confirmed.
Read on TechCrunch ↗Samsung Electronics re-allows ChatGPT after 2023 leak of confidential data
Impact: Confidential information leaked, scale unknown
A leak of confidential information occurred at Samsung Electronics in 2023. Employees were later allowed to use ChatGPT again.
Read on SamMobile ↗Samsung Electronics X account hacked to spread scam posts
Impact: Fraudulent posts spread via the X account
Samsung Electronics' Twitter/X account was hacked and used to spread fraudulent posts. The account compromise and the posts came to light on 15 April 2025, and the specific scale of the damage and the response have not been confirmed.
Read on SammyGuru ↗Samsung Electronics' German customer database leaked
Impact: German customer database
Samsung Electronics' German customer database was leaked. A hacker released the customer data, and some headlines pointed to an infostealer as the means of the leak.
Related reports: 4 · last report →Samsung Electronics wins data breach class action
Samsung Electronics won a class action over a data breach. The timing of the incident, the scale of the breach and the method of attack have not been confirmed.
Read on Law.com ↗Samsung Electronics UK shop customers' personal data leaked
Impact: Personal information of UK store customers
The personal information of Samsung Electronics UK store customers was leaked. Hackers accessed customer data over the course of a year-long breach. Samsung Electronics notified affected customers of the leak.
Related reports: 6 · last report →
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.