Most devs still use the outdated AES CBC mode.
Use AesGcm for modern authenticated encryption.
using var aes = new AesGcm(key); aes.Encrypt(nonce, data, ciphertext, tag);
🛡 Why It’s Better
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✔ Authenticated
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✔ Fast on modern CPUs
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✔ Built to prevent tampering
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✔ Recommended for APIs & tokens