I was listening to "You and Yours" this morning on Radio 4. A woman who owned a taxi firm had been scammed by people somehow hacking into the business's phone system via the internet and making loads of calls to Somalia (apparently, a "trojan" is inserted into the system which can be activated at any time - I don't understand the technicalities I'm afraid). It was said that this sort of scam is becoming more and more common (amounting to £1.2 bn. in the UK), particularly targeting small businesses and being activated at times when offices are less likely to be open (e.g. Bank Holidays).
Although it was accepted that her phones had been used fraudulently, she was still liable for the bill of £7,000.
They spoke to the Chief Executive of an organisation called TUFF (an anti-fraud organisation) who said that they can advise people on how to best reduce the risk of this type of fraud - mind you, I don't know if this organisation is just trying to get new business.
Anyway, I though anyone who runs a small business might like to know about this and look into it in a bit more detail to see if there are any ways of reducing the risk of being targeted in this way.