Case study: fake hardware cryptowallet
Full review of a fake cryptowallet incident. It looks and feels like a Trezor wallet, but puts all your crypto-investments into the hands of criminals.
https://www.kaspersky.com/blog/fake-trezor-hardware-crypto-wallet/48155/
It's best to purchase devices directly from manufacturers to ensure you receive genuine devices. Avoid purchasing from classified sites, eBay, or Amazon, and store large amounts with multiple keys.