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"The attackers tried to extort us for money to make it stop," company co-founder David Heinemeier Hansson wrote in a blog post. "We refused to give in and worked with our network providers to mitigate the attack the best we could. Then, about two hours after the attack started, it suddenly stopped."
In a separate post on GitHub, Hansson stated, "We've learned that the very same criminals ... attacking and trying to extort us hit others just last week. ... The blackmail came from an address matching this pattern: email@example.com. If you have been extorted by this person, please get in contact so we can compare notes on both technical defenses and the law enforcement effort to hunt them down."
At 10:54am Central Time, Basecamp tweeted, "We're now back in business for 95 percent of all customers, but we're not resting until we're back for 100 percent. Working as fast as we can to fix it!"https://o1.qnsr.com/log/p.gif?;n=203;c=204650394;s=9477;x=7936;f=201801171506010;u=j;z=TIMESTAMP;a=20392931;e=i