The Financial Services Authority is warning people about an attempted fraud which sees scammers posing as its chairman.
The financial regulator says emails have been sent to people asking them to provide information through an attachment.
It says the emails aren't genuine, and you shouldn't click on links or open any attachments.
It's advising IT teams to block three domains - mail-iomfsa.org, mails-iomfsa.org and mail_lb.org