{'fraction_non_alphanumeric': 0.021645021645021644, 'fraction_numerical': 0.0, 'mean_word_length': 5.25, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Full-Duplexing Jamming Attack for Active Eavesdropping

In this paper, we introduce smart jamming attack by an active eavesdropper (or jammer) who is capable of full-duplex communications. Using self-interference cancellation, the active eavesdropper can have no degraded signals from jamming, while the powers of jamming signals can be decided to manipulate a legitimate transmitter's transmission powers in decreasing the secrecy rate when the legitimate transmitter is unaware of the jammer's capability of full-duplex communications. We derive a closed-form expression for an upper-bound on the secrecy rate and use it to allocate the jamming powers. From this, we can show that the secrecy rate can be zero under full-duplex attack for any total transmission power of the legitimate transmitter. This result demonstrates that a transmitter should be aware of the possibility of active eavesdropping with jamming attack.