asleep at the switch

be /fall asleep at the wheel and be /fall asleep at the switch is an alternative (to be too slack and not ready to avoid problems and do one's job well) — проворонить

Example: The administrators fell asleep at the switch and let the virus spread.— Админы проворонили этот вирус и он расползся (по сети).

So, if someone is asleep at the wheel, they are not doing their job or taking their responsibilities very carefully.

see also

Literally fall asleep at the wheel means to fall asleep while driving — заснуть за рулем.

Example 1: You should always have regular breaks when you make long journeys or you could end up falling asleep at the wheel.

Example 2: They reckon that the accident was due to one of the drivers falling asleep at the wheel.