Conficker , a feared computer virus , has n't caused much damage yet . Some experts disagree about whether it itself has passed . Hypponen said Conficker was not hype ; it was the largest network of its kind seen since 2003 and deserved the attention it got from the security community and from the public . Worm made news because of an supposed April Fool 's Day joke . Some infected computers have received malicious anti - virus software .
Conficker , a feared computer virus , has n't caused much damage yet . Some experts disagree about whether it itself has passed . Worm made news because of an supposed April Fool 's Day joke . Some infected computers have received malicious anti - virus software .