Packard Bell customers have borne the brunt of an attack on Acer that exposed up to 40,000 records.
The news preceded the official release of the results of an investigation into the attack which exposed customer names, phone numbers and home and email addresses.
Packard Bell is a subsidiary of Acer.
A group calling itself the Pakistan Cyber Army used access credentials posted on a support forum, according to the Hacker News, and obtained FTP server access.
Acer said in a statement that it "is diligently investigating this matter".
"Although the investigation has not yet been completed, it presently appears that the only data affected was regarding Packard Bell customers and that the information disclosed was limited to name, address, phone, email and system serial number," a spokesperson said.
"No credit card or other personal data appears to have been included.”