Which algorithm can help ensure data integrity?

The SHA-256 hashing algorithm is commonly used to help verify data integrity. It works by converting data into a fixed-length hash value, which acts like a unique digital fingerprint. When the data is received or accessed later, the hash can be generated again and compared with the original one. If both hash values match, the data has likely remained unchanged. If they do not match, it means the data may have been modified or corrupted. This is why hashing algorithms are widely used in cybersecurity, file verification, digital signatures, and secure systems. They do not store or sort data; they help detect changes reliably.