In computing, a denial-of-service ( DoS) attack is an attempt to make a machine or network resource unavailable to its intended users, such as to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet. A distributed denial-of-service ( DDoS) is where the attack source is more than one–and often thousands of-unique IP addresses.
Cigarette girl in European and American context generally refers to a person that sells or provides from a tray held by a neck strap. They may also carry cigars, and many novelty items like lighted roses, candy, snacks, chewing gum, lighted jewelry, and lighted yo-yo's on their trays.