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![]() Given the 433.92mhz falls within the Amateur Radio frequency bands, antennas tuned to this frequency are relatively inexpensive and commercially available. ![]() Leveraging a more specialized High Gain YAGI Directional Antenna reception distances became 200+ feet in free space and approximately 115 feet when transmissions must penetrate walls. no walls, trees, or obstructions between keypad and antenna) and approximately 50-60 feet when transmissions must penetrate walls. Leveraging the standard omni-directional antenna that comes with the SDR Dongle the the keypad transmissions can be received from approximately 100 feet in free space (i.e. To get rtl_433 visit their GitHub Repo located here – Update 5/19/18: The Stable Master Branch of rtl_433 now includes the SimpliSafe decoder module by default. Leveraging a Software Defined Radio (SDR) USB Dongle and the popular RTL-SDR Software known as “rtl_433” with a custom module we were able to capture and decode in real time all messages sent to the base station including the most sensitive key data fields of These transmissions are completely unencrypted and leverage an Amplitude Shift Keying (ASK) modulation of Pulse Interval Width Modulation (PiWM) at an approximate symbol rate of 2000 symbols per second to encode the data transmissions. ![]() The SimpliSafe keypad (U9K-KP1000) transmits data including PIN, Arm, Disarm, and test mode commands to the SimpliSafe base station (U9K-BS1000) leveraging the frequency of 433.92Mhz. Making matters worse, the devices which are compatible with the system are NOT upgradable over the air, as a result until they are replaced the home is vulnerable to attack.īase station fails to detect tamper attemptĬVE-2018-11402 – Unencrypted Keypad Transmissions These vulnerabilities have previously been reported by security researchers but have been downplayed by Simplisafe as “sophisticated” or “highly unlikely” attacks in their blog post “ Our Commitment to Your Security ” in 2016. The SimpliSafe Original system suffers from multiple vulnerabilities which when exploited could result in a consumer’s expectations of their service being unmet by SimpliSafe. Please note – No testing has been performed against the next generation system released in 2017. Subsequent Researcher: Michael Ossmann of Great Scott GadgetsĬONFIRMED: SimpliSafe Original home security system Original Researcher: Dr Andrew Zonenberg of IOActive Wireless Capture and Decoding of SimpliSafe Original Security Systems |
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