The popular group chat system Campfire is currently being nailed with a DDoS attack. It turns out some blackmailing hackers are trying to extort money from the provider. They're refusing to negotiate.
37Signals, the company behind Campfire, Basecamp and other products posted the following to its blog:
Criminals have laid siege to our networks using what's called a distributed denial-of-service attack (DDoS) starting at 8:46 central time, March 24 2014. The goal is to make Basecamp, and the rest of our services, unavailable by flooding the network with bogus requests, so nothing legitimate can come through. This attack was launched together with a blackmail attempt that sought to have us pay to avoid this assault.
These types of extortion attempts are quite common, and you don't hear about them more often because plenty of companies choose to just pay up to avoid the service interruption. Just a few weeks ago, Meetup was hit with a similar attack after refusing to pay hackers not hack the service.
If you use 37Signals products, you can expect things to be a little spotty for the foreseeable future. We will update once we learn more. [Basecamp]