Privacy Leakage in Discrete Time Updating Systems
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arXiv
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| Format: | Preprint |
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2022
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| _version_ | 1866909094572457984 |
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| author | Sathyavageeswaran, Nitya Yates, Roy D. Sarwate, Anand D. Mandayam, Narayan |
| author_facet | Sathyavageeswaran, Nitya Yates, Roy D. Sarwate, Anand D. Mandayam, Narayan |
| contents | A source generates time-stamped update packets that are sent to a server and then forwarded to a monitor. This occurs in the presence of an adversary that can infer information about the source by observing the output process of the server. The server wishes to release updates in a timely way to the monitor but also wishes to minimize the information leaked to the adversary. We analyze the trade-off between the age of information (AoI) and the maximal leakage for systems in which the source generates updates as a Bernoulli process. For a time slotted system in which sending an update requires one slot, we consider three server policies: (1) Memoryless with Bernoulli Thinning (MBT): arriving updates are queued with some probability and head-of-line update is released after a geometric holding time; (2) Deterministic Accumulate-and-Dump (DAD): the most recently generated update (if any) is released after a fixed time; (3) Random Accumulate-and-Dump (RAD): the most recently generated update (if any) is released after a geometric waiting time. We show that for the same maximal leakage rate, the DAD policy achieves lower age compared to the other two policies but is restricted to discrete age-leakage operating points. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_15630 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Privacy Leakage in Discrete Time Updating Systems Sathyavageeswaran, Nitya Yates, Roy D. Sarwate, Anand D. Mandayam, Narayan Systems and Control A source generates time-stamped update packets that are sent to a server and then forwarded to a monitor. This occurs in the presence of an adversary that can infer information about the source by observing the output process of the server. The server wishes to release updates in a timely way to the monitor but also wishes to minimize the information leaked to the adversary. We analyze the trade-off between the age of information (AoI) and the maximal leakage for systems in which the source generates updates as a Bernoulli process. For a time slotted system in which sending an update requires one slot, we consider three server policies: (1) Memoryless with Bernoulli Thinning (MBT): arriving updates are queued with some probability and head-of-line update is released after a geometric holding time; (2) Deterministic Accumulate-and-Dump (DAD): the most recently generated update (if any) is released after a fixed time; (3) Random Accumulate-and-Dump (RAD): the most recently generated update (if any) is released after a geometric waiting time. We show that for the same maximal leakage rate, the DAD policy achieves lower age compared to the other two policies but is restricted to discrete age-leakage operating points. |
| title | Privacy Leakage in Discrete Time Updating Systems |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2205.15630 |