nicole eagan is chief executive of cyber security firm darktrace, she's here in the studio.ll us a little bit more about how this attack worked. when you look at the attack it moved very quickly. it looked for vulnerabilities in the software patches and once it got inside the network it spread like wildfire. it uses network it spread like wildfire. it uses a worm. it did not require a human to do anything. usually with an attack kuwait for a person to click on the link and take action but in this case it spread automatically. that is why it spread s0 automatically. that is why it spread so farand so automatically. that is why it spread so far and so fast? yes, it outstripped our human security teams capacity because it moved very fast. it is not clicking on something which enables the virus or worm to go through, literally went from computer to computer. here in the nhs where there are so many are so many computers, is that why it spread so quickly and what can be done? yes, it did spread internally. the good news is this is actually quite a blatant attack. what i mean by th