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Remember this is apparently a *support tool*. The issue of insider access from *engineers* is a tricky one, because ultimately engineers need to be able to engineer the system. It's possible, but tricky, to build sufficient controls around engineering procedures.
But support tools? There should be high-level overrides for all of that stuff, and auditing up the wazoo, at the very least a kill switch that is always accessible to on-call engineers/security team. It should've taken minutes to identify and lock out the attack.
There is absolutely no reason why anything someone working for Twitter support does shouldn't be immediately identifiable, controllable, and reversible by someone at a higher level, on-call, as soon as it happens. We have access hierarchies for a reason.
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