The usual attack on Sigfox network is related to the “security”. Behind this large concept, for real, the only point is related to the use of clear payload over the air. As a consequence some are extending this to the possible replay after 2048 frames so regarding a standard use of Sigfox is will be about 6 month later…
That said, for real, all of this is just ignorance from these pseudo “security” experts and developer laziness. Don’t beat me for saying that, I’m part of the lazy developer, the only difference is I’m not complaining and I’m aware the solution is in my own hands.
Because, for real, the payload encryption exists as documented in the post I’ve published on May 2017 and detailed on the Feb 2017 technical security paper published by Sigfox or like in this document.
So saying the Sigfox is not proposing payload encryption is wrong and this option is also fixing any 6 months later message replay. It’s like saying WiFi is not secured because you can create an open-network.
So now, let’s see why encryption is not the default option, why a network encryption standard is not the best option and then see how to stop to be a lazy developer and make encryption working.
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STM32 solution for using Sigfox is actually one of the best offer on the market has the solution is powerful, low consumption and allows global coverage with the use of the last Sigfox library versions including Monarq, Bubble… Different module providers are actually designing solutions based on this platform.
GNURadio is an open-source software for making Software Defined Radio. It can be used to model a radio transmission or the process a real radio communication.
After having tested different LoRaWan gateway like 
STM32 ARM MCU are proposing different low power mode for saving energy when running IoT on battery. Some basic example of low power are delivered with the SDK as part of CubeMx solution but these example are not really complete, not well documented and in my point of view difficult to use in a Fresh new project. Basically my current feeling with STM32 is these guy are pretty good to write thesis on how to do magic stuff with the MCU, writing hundreds of pdf pages about really detailed stuff but they are really bad for providing some line of code to illustrate this valuable content with something practicable you can use on the go. So after spending a week working on a working and understood example of low power code, I’ll share with you the result of this work…
Arduino is supporting STM32 platform and after 
In a previous post I explained