Audit required: Insecure cipher mode BAN-W1005
Security
Major
Use of insecure cipher mode such as ECB is not recommended for use in cryptographic protocols at all.
In case of ECB, it encrypts identical plaintext blocks into identical ciphertext blocks; and does not hide data patterns well. In some senses, it doesn't provide serious message confidentiality.
Read more about different cipher modes here -- https://cryptography.io/en/latest/hazmat/primitives/symmetric-encryption/#module-cryptography.hazmat.primitives.ciphers.modes