The group adds that investigations are currently ongoing, and the ValueMax is expected to conduct a “rigorous” review of the incident and its IT systems to “enhance and strengthen” its cybersecurity infrastructure.
As at Oct 15, the group is not aware of any external leakage of data.
ValueMax says the group has “further activated its business continuity plan to limit any potential operational disruption to customers”.
Relevant authorities have also since been alerted about the incident.
The group will provide further updates should there be any other material developments.
A string of Singapore Exchange -listed firms have been hit by cybersecurity attacks this year.
Beng Kuang Marine revealed on Aug 19 that its external IT service provider was the target of a ransomware attack. Bukit Sembawang Estates reported a "cybersecurity incident" on Aug 13.
Soon Lian Holdings and Hiap Seng Industries reported similar incidents in July.
YKGI, Jumbo Group , Aztech Global , IPS Securex Holdings, ES Group (Holdings) and RE&S Holdings all reported ransomware attacks earlier this year.
Shares in ValueMax closed 1 cent higher, or 2.22% up, at 46 cents on Oct 15.