The seizures this week are the third wave of U.S. law enforcement actions against prominent booter services that allowed paying users to launch powerful distributed denial-of-service, or DDoS, attacks that flood targeted computers with information and prevent them from being able to access the internet. Data relating to the operation of booter sites previously seized by law enforcement show that hundreds of thousands of registered users have used these services to launch millions of attacks against millions of victims. School districts, universities, financial institutions and government websites are among the victims who have been targeted in attacks launched by booter services...