In August NUMBER@1 , two major worms called MISC@1 and Blaster began to attack millions of ORGANIZATION@1 Windows computers , resulting in the largest downtime and clean-up cost to that date .

In August NUMBER@1 , two major worms named the MISC@1 worm and the Blaster worm began to attack millions of ORGANIZATION@1 Windows computers and caused many problems for system administrators and computer operators who used Windows NUMBER@2 .
