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hello and welcome to secure code warrior in this module weamp;#39;ll be looking at padding Oracle will explain what a padding Oracle attack is its causes and Preventionamp;#39;s and some potential hazards so what is a padding Oracle attack through a padding Oracle attack an attacker is able to decrypt information without knowing the encryption key if an attacker can determine whether a given encrypted text has valid padding when it is decrypted this can result in cracking CBC based symmetric encryption without needing the key what causes a padding Oracle attack this attack will be possible in cases where an application returns different responses to deciphering messages that gives plaintext with valid or invalid padding to understand padding Oracle attack vulnerabilities letamp;#39;s first go through CBC encryption and decryption in CBC mode each block of plaintext is ex-ored with a previous ciphertext block before being encrypted you this way each ciphertext block depends on all pl