Black Desert Online is under DDoS attack for the second time in about as many weeks. The team has acknowledged the attack and is working to resolve the issue. The report came nearly a full day ago, but as recently as a half hour ago, the problem still existed.
Our NA players may experience login issues as our Authentication Server is under DDOS Attack. Our Tech Team is aware of the situation and are working on mitigation now. Please be patient while we handle this matter, and as always your patience and cooperation is appreciated.
Source: Black Desert Online forum
Thanks, WNxbadboy3!