John, an ethical hacker, is demonstrating a proof-of-concept iot attack. for this demonstration, he used a jammer to jam and sniff the code sent by the car remote of a victim to unlock his car. due to the jamming, the vehicle did not open; so the victim sent a code again to unlock his car. john sniffed the second code as well. after sniffing and capturing the second code, he forwarded the first code to the car which opened it. john can use the second code in future to unlock the car. what kind of attack did john demonstrate? rolling code attack side channel attack blueborne attack sybil attack

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