Who I Am
I'm an IT professional writing under the Miro Feld pseudonym, based in Polička, Czech Republic. My work focuses on techno-thrillers set at the intersection of cybersecurity, youth culture, and the invisible digital infrastructure that holds modern life together.
My stories are grounded in real technology and real threats. The question behind every story is simple: What if this actually happened?
The Writing
NetDef Series
The NetDef series is a five-book YA techno-thriller set in the streets, trams, cafés, and parks of Prague. It follows two teenagers:
- Tomas, who detects a fake WiFi hotspot and a hidden card skimmer
- Nela, who proves a stranger has been following her using data from her own phone
Their investigations collide and escalate across five books — from poisoned café networks and compromised home routers to hidden surveillance devices in residential buildings and a cross-country police investigation tracing a mysterious antenna design.
No car chases. No secret lairs. Just real technology, real tradecraft, and the invisible world of wireless signals.
Signal Lost
A standalone techno-thriller. A disgraced signals-intelligence specialist detects an impossible Bluetooth pulse beneath an abandoned garage complex — a medical implant inside a kidnapped woman's body, transmitting a signal meant for a receiver that was taken from her.
Noise means safety. Silence means danger.
NetDef Field Stories
A collection of 271 technically authentic short stories covering:
- WiFi detection
- Counter-surveillance
- RF analysis
- Incident response
- Active defense
Each story drops the reader into a real-world scenario — from mountain rescue stations to Mumbai coworking spaces — where an ordinary person discovers an extraordinary threat hiding in the radio waves around them.
Background
I've spent 32 years working in IT, across architecture, programming, and cybersecurity.
That hands-on experience informs every page. When Tomas analyzes a rogue access point or Nela traces a Bluetooth signature, the techniques are real because I've used them.
Prague, with its blend of historic architecture and modern technology, provides the perfect setting for stories about the hidden digital world surrounding us every day.
Other Projects
Alongside writing fiction, I also develop software projects exploring data analysis, logic, and pattern discovery.
One of these projects is Enlyzr, a platform focused on personal data analysis and activity tracking. It includes tools such as the Activity Tracker, which helps users record daily activities and discover patterns across time, environment, and behaviour.
The project also explores logical thinking through puzzle design. Games developed under Enlyzr include DualSum Sudoku, a Sudoku variant built around overlapping sum constraints, and Renzoku, a puzzle that challenges players to detect hidden numerical patterns.
More information is available at enlyzr.info.