The only thing a bit wishy washy is the "only affected 1.4%" part. If the billing system was reporting $0 balances for everyone, then only 1.4% of Twilio's acco

The only thing a bit wishy washy is the "only affected 1.4%" part. If the billing system was reporting $0 balances for everyone, then only 1.4% of Twilio's accounts have auto-recharge cards on file and made at least one call/text in a 1.5 hour window. A large portion of the other 98.6% could be abandoned/inactive/toy accounts or they'd have been affected too. The percentage of active accounts affected was probably much higher, for some reasonable definition of active. That said, I'm being pedantic to mention it. I think the situation was very well handled.