The right solution is not thinking about it at all. The only extant malicious chargers anyone has shown evidence of have been proof-of-concepts whose concept ha

The right solution is not thinking about it at all. The only extant malicious chargers anyone has shown evidence of have been proof-of-concepts whose concept hasn't worked in nearly a decade. If you're worried about purely theoretical attacks, you should also be worried about your power bank's firmware being infected from the malicious port and subsequently infecting your phone.