The Cypher Kids and the Phantom Signal A Hardware Hacking Adventure

By Rajni Sharma

One signal. 47 hours. No way out.

Lincoln Middle School was supposed to be the "smart school" of the future. But for the Cypher Kids, the future is looking like a high-tech trap.

When Maya Chen notices the school's new, expensive smart locks acting strangely, she doesn't just see a "glitch"-she sees a pattern. Along with technical genius Leo and OSINT expert Sania, Maya discovers a terrifying countdown: in 48 hours, every "smart" door in the building is programmed to lock simultaneously, trapping students inside.

As they peel back the layers of a sophisticated hardware conspiracy, the Cypher Kids realize this isn't a student prank. It's a professional-level operation involving a mysterious shell company, hidden physical backdoors, and a "phantom signal" broadcasting on the 433.92 MHz frequency.

With the clock ticking and the school's administration hesitant to believe them, the team must use every skill in their arsenal-from hardware forensics and RF signal analysis to ethical hacking-to outsmart a criminal organization before the countdown hits zero.

Why readers (and parents) love The Cypher Kids series:

Real Tech, Real Skills: Unlike typical mysteries, this story features authentic STEM concepts including Raspberry Pi projects, IoT security, firmware analysis, and network defense.Diverse Protagonists: Meet a relatable team of young investigators-Maya, Leo, and Sania-who prove that curiosity and teamwork are the ultimate security tools.Cyber-Safety & Ethics: At its core, the book teaches the importance of "White Hat" hacking, digital responsibility, and how to stay safe in an increasingly connected world.Fast-Paced Adventure: Perfect for fans of Spy School, The Mysterious Benedict Society, and Masterminds.

Included Educational Appendix:

Continue the journey with a special appendix featuring safe, legal, and parent-approved activities Learn how to identify IoT devices in your own home and understand the hardware security mindset used by professional investigators.

Can the Cypher Kids stop the Phantom Signal, or will the "smart school" become a digital prison?

Join the Security Club. Solve the mystery. Secure the future.

• Format: Paperback
• Language: English
• ISBN: B0GYT1WTT4
• ISBN13: 9798235937864
• Release Date: February 2026
• Publisher: Rajni Sharma
• Length: 280 Pages
• Weight: 0.72 lbs.
• Dimensions: 0.6" x 5.5" x 8.5"