Answer :
Encryption is most likely the source of vulnerability.
What is encryption?
Encryption is the process of scrambling data so that only authorised parties can decipher it. It is the process of converting human-readable plaintext into incomprehensible text, also known as ciphertext, in technical terms.
In layman's terms, encryption alters readable data so that it appears random. Encryption necessitates the use of a cryptographic key, which is a set of mathematical values agreed upon by both the sender and recipient of an encrypted message.
Although encrypted data appears to be random, encryption proceeds in a logical, predictable manner, allowing a party who receives the encrypted data and has the correct key to decrypt it, converting it back to plaintext.
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