Because the security level of Tenpay is set too low, once someone knows the account number' q' q', they can try out the login password and payment password and use the money in Tenpay's account.
Tenpay account needs to install a special computer for digital certificate binding, without which others can't pay;
Then bind the mobile phone number, and others cannot pay without the mobile phone verification code;
You can also add a second login password to Tenpay account and set up an additional payment barrier.