The whistle-blower behind a suspected cheating scandal involving an award-winning medical prescription app developed by a student has been arrested for doxxing, the South China Morning Post has learned.
A source confirmed on Friday that Hailey Cheng Hei-lam, the student who rose to fame overnight last year after raising concerns about the MediSafe app’s development and patient privacy, was accused of disclosing personal data without consent to cause specified harm. She was apprehended on Thursday.
“Under caution, the arrested person admitted to using her personal social media account to post ‘doxxing’ content,” the source said.
Last year, Cheng gained overnight notoriety after raising concerns about how a high school pupil could have created such a complex platform as MediSafe.
The mobile app was reportedly developed by a Secondary Four student from St Paul’s Co-educational College in the Mid-Levels and commissioned by the student’s father, specialist doctor Ronnie Poon Tung-ping.

The app is a medication management system that uses AI to verify patient information and prevent prescription errors. It has won at least six awards since August 2024, including four from the Hong Kong ICT Awards 2024, organised by the Digital Policy Office.