A friend and colleague of mine, namely Alexios Fakos has published a Book under the title of Sichere Web Anwendungen, unfortunately it is german only. If you'd like to know how to code hardened Applications I heartly recommend this Book.
A free Chapter of the Book can be found here
Video: GNU Radio Companion: Acoustic Beats
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In this video, I use GNU Radio Companion (without SDR) to illustrate the
acoustic beat phenomenon. I mention a 400Hz dial tone in this video, but
this will...
1 day ago