CVs submitted to recruitment site Jobs.ie have been downloaded by hackers who used an illegally obtained login and password to access areas of the site limited to employers.
The incident took place last Thursday. A company spokeswoman quoted in The Irish Times says those affected have been contacted and the Data Protection Commissioner has also been informed.
The company has someone at a 24-hour helpline number taking queries. The company is urging those affected not to open suspicious e-mails.