The government announced that the breach was discovered on Friday and that the Registration and Electoral Office referred the matter to a law-enforcement agency, which is now conducting a full investigation.
A government spokesman said the administration “strongly condemns the illegal act and solemnly reiterates that any attempt to disrupt or interfere with an election is a serious offence”.
The functions of the investigation will be taken “very seriously” and cannot be tolerated, according to the statement.
The Office of the Privacy Commissioner for Personal Data has also launched its own probe and immediately required the relevant social-media platform to remove the infringing information.
The platform confirmed that it complied and the data was taken down, the government said.
The government did not provide further details of the scale of the leak or the identities of the affected individuals, citing ongoing investigative needs.
The incident comes in the context of heightened sensitivity ahead of the forthcoming poll, as Hong Kong authorities have emphasised the need to safeguard election integrity and maintain public confidence in the right to vote.
While the leak raises fresh concerns about data protection and electoral security, the authorities’ swift referral to law-enforcement and the involvement of the Privacy Commissioner suggest the matter is being treated as both a criminal and regulatory breach.
The December election will be held under a heavily revised electoral system, during which the authorities have underscored zero tolerance for any actions perceived to undermine the process.
Voters expressed unease about the leak and called for transparency and assurances that their personal information was secure.
With investigations ongoing, authorities have asked the public to report any online disclosures of personal data and reminded all parties that disrupting an election amounts to a serious offence under the law.

































