On the website that Rian is accessing, a part of his Social Security number is visible, but not the complete number. The remaining digits are replaced with asterisks, enabling him to verify the last four digits. What is the term for this technique used on the website?

Data masking involves the partial redaction of sensitive data by replacing some or all of the information in a field with blank spaces or other substitution characters. Tokenization, on the other hand, replaces sensitive data with unique identifiers using a lookup table. Hashing is a one-way function that generates a unique hash from a given value, while encryption uses an algorithm to safeguard data and can be reversed to restore the original data, while ensuring confidentiality and integrity validation.