http://dev.hubspot.com keep sending requests to overload our system

[TTeam98]

Hi,

Our system was overloaded on September 29th. On the system log, we record  a lot of requests sent to our system from http://dev.hubspot.com

After we block subnet: 54.174.0.0/16. Our system is back to normal

Could you guys help me explain this problem? Thank you

Please refer to the attached file

[Jaycee_Lewis]

Hey, @TTeam98 👋 Is this still occurring? Furthermore, was this a production account? If so, can you file a support ticket, please? Filing a support ticket may be able to get you more clarity on internal tools that may have caused this uptick. 

Thanks for the additional information.

Best,

Jaycee