Both companies made their respective announcements via the Singapore Exchange website.
According to Vallianz on Dec 28, it has contained the incident with the help of external consultants and has reported the incident to "relevant authorities".
Citing its preliminary assessment, Vallianz believes there is no significant impact on its business operations.
Similarly, in its announcement on Dec 23, PSC Corp said an unknown party gained unauthorised access to its servers.
The company, with the help of external consultants, was able to promptly restore access to the affected data via the backup systems.
"Consequently the impact on the group’s operations was minimal," says PSC Corp.
According to the company's preliminary assessment, the attack does not have any material financial impact on its business.
See also: A call to go beyond the humble backup
PSC Corp says it has reported the Incident to the police and also the Personal Data Protection Commission Singapore.
Vallianz Holdings shares last traded at 3.5 cents, up 16.67% year to date.
PSC Corp last traded at 33 cents, up 1.56% year to date.
