Variants of the Klez worm were by far the most common viruses circulating on the Internet this month. That's according to monthly statistics from managed services firm MessageLabs, which stopped 422,507 viruses in April, way up on the 161,904 it blocked in March, after a mercifully quiet start to the year in terms of virus infections. MessageLabs reports that virus infection rates are currently running at around one per 265 emails, which compares to one in 30 infected emails at the heights of the Goner and Love Bug epidemics.

Full story at The Register USA