In $2016,$ an attacker used a botnet of security cameras, DVRs$,$ and network printers to target a cloud$-$based internet performance management organization that provided DNS services to large corporations. This created connectivity issues for legitimate users across the United States and Europe. Which type of attack was MOST likely used in this scenario?

Question $99$ options:

Stored cross$-$site scripting attack

Active session hijacking attack

MAC spoofing

DDoS attack