What is the primary drawback to using advanced encryption standard (AES) algorithm with a 256 bit key to share sensitive data?

AES-256 is a highly efficient cipher; its 256-bit key size does not meaningfully hinder encryption or decryption performance in modern hardware implementations.

AES is natively supported in virtually all modern messaging and encryption libraries and does not require complex configuration to use.

AES is considered one of the strongest and most trusted ciphers available - it is a NIST-standardized algorithm with no known practical cryptanalytic weaknesses.

AES is a symmetric key algorithm, meaning the same key is used for both encryption and decryption. When sharing sensitive data with multiple recipients, each recipient must be given a copy of the secret key via a secure out-of-band channel, which creates a significant key distribution and management challenge that symmetric algorithms inherently cannot solve on their own.