Forbes has struck a deal to provide online cyber-liability insurance for the customers of communications giant, BT.
The new package allows customers to take out cover against cybervandalism, website attacks, and other possible threats to online trading.
The service is currently available to BT Connect, an internet service designed for small businesses, and customers of BT TrustWise a digital certification operation.
Alexander Forbes' director, Trevor Moss, said: "Businesses are rapidly becoming aware of the additional risks of using the itnernet.
"These include inadvertantly transmitting a virus, defamatory emails sent by staff, or hackers breaking into their network."