Install hidden hardware inside mouse

It's probably easier to run a 'tech support' phone scam on a clueless person and ask them to pay with Walmart gift cards than it is to engineer a concealed mouse hack to get secure information. I mean, when's the last time you heard of a 'mouse based cyber attack' versus the last time you heard about some person getting taken via the 'tech support' scam? I suspect the latter happens much more often.

Recently my doctor asked his bank for the IRIS payment system, so that his clients can pay him online without requiring a POS device to scan a credit card. Some scammer knew that and called him pretending to be from the bank and told him in order to complete the registration they needed his card details, including the PIN and the CCV number at the back! Of course he just hang up, but they were bold enough to call again! They were just lucky that a patient came and he didn't had the time to call the police!