Anyone can see your password
Anyone can see your password by reading the slot which the password is stored, which is slot 1. Using the private keyword doesn't necessarily mean the information there would be private.
Anyone interested enough can know your password.
Manual review
Don't store private information on the blockchain.
Private functions and state variables are only visible for the contract they are defined in and not in derived contracts. In this case private doesn't mean secret/confidential
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