In what way is the BBC at fault for this? Their title is objectively true. A _valid_ configuration setting that was used by a customer _did_ cause fastly to have an outage.

It's not limited to one specific customer (i.e this customer isn't the only customer who could have caused the issue, presumably), but it _was_ something the customer (legitimately) did. It wasn't a server outage. It wasn't a fire. It wasn't a cut cable.

"a customer quite legitimately changing their settings (BBC: one fastly customer) had exposed a bug (BBC: triggered internet meltdown) in a software update issued to customers (fastly admitting, when combined with 'legitimately', that fastly are at fault) in mid-May".