A deep dive into investigating a complex denial-of-service attack
On April 19, 2024, Datadog’s US5 website (app.us5.datadoghq.com) started experiencing elevated error rates, though they were low enough that most of our users didn’t notice them. For the next few days, we worked around the clock responding to multiple episodes of this mysterious attack, which gradually unfolded as we investigated. We also implemented several measures to reduce the impact on our customers.