What is this unscrambled uif ebub jt tbgf?

The unscrambled text is "the data is safe." This is a simple Caesar cipher, where each letter is shifted by one position in the alphabet. To decode it, you shift each letter back by one (e.g., 'u' becomes 't', 'i' becomes 'h', and so on). It is a basic encryption technique that involves substituting each letter in the plaintext by a letter a certain number of positions down the alphabet.