Several tools are in use now, and the technology is maturing.
As a result, a single, simple command from an attacker could result in tens of thousands of concurrent attacks on one or a set of targets. The attacker can use unprotected Internet nodes around the world to coordinate the attacks. Damaged systems include those used in the attack as well as the targeted victim. For the victim, the impact can be extensive. One consideration is the approach typically taken by the intruder community.