Which of the following measures are used to secure data on-line? I. Password II. Encryption III. Personal Identification Number (PIN)

To secure data online, all of the following measures can be used: Password, Encryption, and Personal Identification Number (PIN). These measures help to protect sensitive information from unauthorized access, theft or hacking. - Passwords are commonly used to restrict access to online accounts, devices or networks by allowing only those who have the correct password to gain access. Passwords are usually a combination of letters, numbers and symbols that are difficult to guess. - Encryption is the process of converting plain text into a code that is difficult to decipher without the correct key or password. Encrypted data is protected from unauthorized access or tampering. - Personal Identification Number (PIN) is a numeric password that is commonly used to access bank accounts, credit/debit cards or mobile devices. PINs provide an additional layer of security and make it more difficult for someone to gain access to personal information. Therefore, the correct option is (D) I, II, and III.