The MEDAGuard: Medical Device Functionality Shielding Against Adverse Effects of Authorized Updates by Leveraging EM Side-Channels project will observe electromagnetic (EM) emissions from medical devices to detect when a device behaves abnormally. By analyzing embedded information with EM signals, MEDAGurad can enhance systems assurance for medical devices such as remote patient monitors. This "cyber smoke detector” compares captured signals with a baseline model derived from a known, properly functioning system version. Any deviations from expected behavior trigger an alert, indicating abnormal system activity or unexpected side-effects of updates, patches, etc. MEDAGuard stands as a notable leap forward in monitoring and attestation domain, especially for critical medical devices where system stability is vital. This sets it apart from state-of-the-art-systems, which often demand shared hardware or network connections with the device under scrutiny. In contrast, MEDAGuard relies solely on physical proximity.