There are alot of computer viruses but this one was caused by a someone who hacked peoples computers which caused viruses
There was someone who hacked alot of peoples computers which caused a viruses. Because of this viruses alot of hospitals in the UK were closed temporarily. Wannacry hacked over 300 000 computers in 150 contries.
A question I have is how long were the hospitals close for? Another question I have is could something like this happen again?
I learnt that there was a really bad viruses going all over the world.