Internet Hit by 'Catastrophic' Security Bug

Available for over a year

There have been dire warnings over the biggest security flaw to hit the internet in years - what's the right way to protect yourself from so-called Heartbleed? Tech stocks lose all of their gains of the year so far - is the party over? And, the role of tech startups in Rwanda's transformation. Presented by Rory Cellan-Jones, with special guest Dr Sue Black from the Department of Computer Science, University College London, and featuring members of the BBC Online Technology desk.