Grant Thornton says it's increased its levels of cyber security in order to protect clients' personal data.
It's reviewed existing digital security - including hardware, software, accessibility and data storage - as well as implementing new training measures to combat phishing.
The company says policy had to be updated and revised to take into account the changing nature and sophistication of threats of cyber-attacks which cost UK businesses £34 billion in 2015.
Researchers ask what you think of your phone company
Bank could get facelift
Island keeps its AA3 Moody's credit rating
More companies giving employees input in risk assessments
Russian citizens added to cyber sanctions list
How will Island remain attractive during MONEYVAL assessment?
Do you know a company director who deserves an award?
Festive social event for young professionals this week