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# How the Friday DDoS attack affected Pingdom
- **期号**: SRE Weekly Issue #46(2016-10-30)
- **作者**: —
- **链接**: http://royal.pingdom.com/2016/10/24/ddos-attack-affects-pingdom/
## 简介
Pingdom suffered a major outage during the Dyn DDoS, not only due to their own DNS-related issues, but also due to the massive number of alerts their system was trying to send out to notify customers that their services were failing.
> […] at 19:20 we went to DEFCON 1 and suspended the alerting service altogether.
## 正文
> ⚠️ 抓取失败:HTTP 404