The first "D" in "DDos" means "distributed," which means there _effectively is_ an infinite supply of devices with which to conduct the attack. It's a hard prob

The first "D" in "DDos" means "distributed," which means there _effectively is_ an infinite supply of devices with which to conduct the attack. It's a hard problem, which is why DDoS attacks are so prevalent and difficult to defend against without sophisticated mitigation devices and services. You have to block the "bad" traffic by some characteristic and many DDoS attackers have gotten _very_ good at making their attack traffic look almost identical to legitimate traffic.