Singapore: a Bee Cheng Hiang marketing employee used a generative AI tool to write a bulk-email script that put up to 1,000 members' addresses in each email's To field, disclosing the email addresses of 95,364 members
On 25 April 2026 Bee Cheng Hiang, the Singapore bak kwa and food products company, sent a marketing email in batches of 1,000 with every recipient's address visible in the To field, so each affected member's email address was disclosed to up to 999 other recipients. Mothership, reporting the findings of the Personal Data Protection Commission (PDPC), puts the number of affected members at 95,364 (The Straits Times says more than 95,000), and the PDPC says email addresses were the only personal data involved. According to the PDPC, an employee had written the email distribution script with a generative AI tool and the prompt did not ask for recipients to be hidden from one another. Mothership reports that a missing bracket in the generated code grouped each batch into one To field. The PDPC says the AI tool did not malfunction and attributes the breach to human error in developing the code with an AI tool. It says the incident likely happened because the company did not test the script sufficiently, had no supervisory review of the employee's work and had no policy on staff use of generative AI. It reports no evidence of further misuse. The company notified the PDPC on 27 April, notified affected members, and gave a voluntary undertaking that the PDPC accepted on 2 September. The PDPC told The Straits Times it was the first AI-related data breach reported to it.
AI involvement supported · Causal attribution supported · 3 sources, 1 underlying account · Added 02/10/2026