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  publisher = {Association for Computing Machinery},
  address = {New York, NY, USA},
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  issn = {0001-0782},
  url = {https://doi.org/10.1145/362375.362389},
  doi = {10.1145/362375.362389},
  journal = {Commun. ACM},
  month = {oct},
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  numpages = {3},
  keywords = {security, protection, leakage of data, proprietary program, confinement, privacy}
}

@inproceedings{simmons1984prisoners,
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  booktitle={Advances in Cryptology: Proceedings of Crypto 83},
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  organization={Springer}
}

@ARTICLE{survey_zander,
  author={Zander, Sebastian and Armitage, Grenville and Branch, Philip},
  journal={IEEE Communications Surveys & Tutorials}, 
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  number={3},
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}

@article{betz2017survey,
  title={Survey on covert channels in virtual machines and cloud computing},
  author={Betz, Johann and Westhoff, Dirk and M{\"u}ller, G{\"u}nter},
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}

@INPROCEEDINGS{xled,
  author={Guri, Mordechai and Zadov, Boris and Daidakulov, Andrey and Elovici, Yuval},
  booktitle={2018 16th Annual Conference on Privacy, Security and Trust (PST)}, 
  title={xLED: Covert Data Exfiltration from Air-Gapped Networks via Switch and Router LEDs}, 
  year={2018},
  volume={},
  number={},
  pages={1-12},
  doi={10.1109/PST.2018.8514196}
}

@INPROCEEDINGS{bitjabber,
  author={Zhan, Zihao and Zhang, Zhenkai and Koutsoukos, Xenofon},
  booktitle={2020 IEEE International Symposium on Hardware Oriented Security and Trust (HOST)}, 
  title={BitJabber: The World’s Fastest Electromagnetic Covert Channel}, 
  year={2020},
  volume={},
  number={},
  pages={35-45},
  doi={10.1109/HOST45689.2020.9300268}
}

@ARTICLE{intrumentation_survey,
  author={Krishnamurthy, Prashanth and Khorrami, Farshad and Karri, Ramesh and Paul-Pena, David and Salehghaffari, Hossein},
  journal={IEEE Transactions on Information Forensics and Security}, 
  title={Process-Aware Covert Channels Using Physical Instrumentation in Cyber-Physical Systems}, 
  year={2018},
  volume={13},
  number={11},
  pages={2761-2771},
  doi={10.1109/TIFS.2018.2833063}
}