People are being warned about spam e-mails containing BBC News stories designed to trick them into visiting malicious websites.
Cyber criminals are using the messages to exploit a recently discovered flaw in Microsoft's Internet Explorer.
If users click on the link, they are taken to a fake website that installs a piece of software that can monitor online financial activity.
People who receive the e-mails are advised to not follow the link.
The alert, from security firm Websense, comes less than a week after security firms found three flaws in the popular browser.
The new threat takes advantage of one of these vulnerabilities.
The fake e-mails entice readers with excerpts from current BBC news stories and include a link to "Read More".
When the user clicks on the link they are directed to a spoofed BBC news website that installs a piece of software known as a keylogger.