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USB logic analyzer tutorial: install PulseView, then decode an Arduino's UART, a sensor's I2C and an SPI flash chip. Plus: cheap clone or Saleae?

12 original gifts for developers and IT people that teach something real, from radio to CTFs, including books and tools we don't sell. Ideas under €50 and €100.

Proxmark3 Easy vs RDV4: hardware differences, antennas, flash size, build quality and euro prices, plus which model suits which kind of user.

RTL-SDR beginner guide: install drivers on Windows (Zadig), Linux and macOS, choose SDR++, SDR# or GQRX, tune your first FM station and fix common errors.

What can you do with an RTL-SDR? 12 projects by level, from aircraft (ADS-B) and ships to Meteor-M satellites and the hydrogen line, with the kit needed.

Which SDR should a beginner buy: RTL-SDR V3, V4 or V4L, HackRF, Airspy or SDRplay? Receive vs transmit, coverage, 2026 prices and our advice for starting right.

Track aircraft with an RTL-SDR: how ADS-B works, which 1090 MHz antenna, installing readsb and tar1090, improving range and feeding flight-tracking sites.

What is a CTF in cybersecurity? Formats, challenge categories, where to play (picoCTF, Hackropole, Root-Me, Hack The Box) and how to solve your first challenge.

Cybersecurity gift ideas without the jargon: the 4 kinds of enthusiast, 5 questions to ask quietly, what to avoid, and what to buy each one, explained simply.