The British Library had confirmed it has been the victim of a ransomware attack in which some of its HR data has reportedly been stolen.
The attackers hit late last month, making its website unavailable, preventing access to its digital catalogue and taking down its internal Wi-Fi, according to a report in The Standard.
According to another report by BNN Bloomberg, a ransomware gang named Rhysida has claimed responsibility in placing some undetailed data for sale on the dark web, and publishing copies of passports, driving licences and other documents.
The library reportedly said it has no evidence of other user data being compromised, but advised users to update their passwords.
An investigation into the attack has been launched with the support of the National Cyber Security Centre and the Metropolitan Police.