[Exclusive] 'Korea's Largest' Business Card App Remember Hit by Data Leak... PIPC Probes Possible Hacking

Members' business card information exposed to another user
Including mobile phone numbers, job titles, email addresses, and more.

A personal information breach occurred at Remember, Korea's largest business card management service. Remember holds hundreds of millions of business card records and information on around 5 million users. The Personal Information Protection Commission, which has launched an investigation, is also looking into the possibility of hacking.

A personal information breach occurred at Remember, Korea's largest business card management service. Photo for illustrative purposes.

On October 20, the Personal Information Protection Commission said, "A report that members' personal information had been leaked from Remember was received on October 14, and we are investigating it." The commission added, "We are internally investigating the circumstances surrounding the personal information leak, including the business card processing process, and the possibility of hacking is also part of the investigation."

Remember said it emailed some members whose personal information had been leaked on October 15, informing them that a system error had temporarily caused members' business card information to be incorrectly displayed in another person's address book.

Remember said, "The leaked information was limited to details listed on business cards, and the information was displayed in the address book of one member. This was temporary, and the information was not accessible to an unspecified number of people." It added, "As soon as we became aware of the incident, we deleted all the incorrectly displayed information to prevent further access. This incident was not caused by an external intrusion or hacking, and the business card information was not leaked externally a second time."

The leaked information included a range of personal details, including names, company names, job titles, company addresses, company phone numbers, mobile phone numbers and email addresses.

Remember said the system error occurred at around 4:09 p.m. on October 12, when it was resolving delays in processing some business cards caused by a disruption in its automatic business card entry process. As a result, another person's business card information was temporarily displayed incorrectly.

A Remember representative said, "We cannot disclose the specific scale of the damage." The representative added, "If you receive a suspicious phone call, text message or email, do not comply with requests to transfer money or provide personal information, financial information or verification codes. Do not open links or attachments from unknown sources."

Meanwhile, Remember was sold to Swedish private equity firm EQT in August 2025 for approximately KRW 500 billion. At the time, concerns were also raised about the transfer and use of personal information after a company handling sensitive information about Korean users was acquired by a global private equity firm. In particular, critics said there was an urgent need to establish regulations for companies such as Remember that hold user data, amid concerns that personal information could be used for marketing when Korean companies are sold overseas.

This content was produced with the assistance of AI translation services.