Misha Glenny: Cybermen will hold us to ransom unless we act now
Over the next couple of weeks, senior management at Ulster Bank and its parent company Royal Bank of Scotland (RBS) will be biting their nails as they wait to see how many of their account holders pull their custom. A simple flaw in a routine upgrade seems to have knocked the bank's entire system off-kilter.
Already, there have been reports that doctors in Mexico threatened to turn off a dying girl's life-support machine because the bank did not transfer money owed to the hospital looking after her.
And at least one couple claims that their purchase of a house collapsed because payment did not go through