Micro controller safety?

Hey y'all, this might not be the exact right place to ask this so if not just lemme know/ maybe point me in the right direction but I just bought a couple extremely cheap micro controllers (ATmega32U4s) and was just wondering exactly what safety measurements I should take if any when buying/using super cheap micro controllers/picos from places like Ali/Amazon Haul

Should I be plugging them into an offline machine? Is there anything to worry about at all?

Thanks!

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from hacking: security in practice https://ift.tt/B4hZ3Na

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