The firm has been targeted by Russian ransomware operator Black Basta.

The firm, which has offices in Hamilton, Edinburgh – and Madrid – has had 155 gigabyes of data stolen.

A spokesperson for the firm said: “We can confirm that we were recently the victim of a cyberattack. We promptly notified the ICO and the Law Society of Scotland, and have been working with the police, external IT and legal experts.

“In compliance with our obligations, we promptly notified those individuals whose data is known to have been affected. Thanks to the hard work of our team, we have been able to overcome the attack and our business is fully operational.

“As there is an ongoing police enquiry, we are not able to provide any further information.”

The gang posted a series of screenshots showing what it had seized.

Jude McCorry, CEO of Cyber and Fraud Centre – Scotland, said: “We are very concerned with the level of cyberattacks that have been occurring over the last few weeks affecting Scottish companies – and are urging organisations to make themselves as cyber resilient as possible, and also to think of the data that they are custodians of and what would happen if this data was leaked or sold on the dark web.”

The Cyber and Fraud Centre can be contacted on 0800 1670623.