If I was a burgler holding a stolen key to a house, waiting to pick a good day, a city-wide blackout would probably feel like a good day.
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Here is what happened:
Some 600 instances were spawned within 3 hours before AWS flagged it off and sent us a health event. There were numerous domains verified and we could see SES quota increase request was made.
We are still investigating the vulnerability at our end. our initial suspect list has 2 suspects. api key or console access where MFA wasn’t enabled.