About Us

FJL Microsystems is a small engineering and consultancy firm established in 1982 to develop software and hardware for the new "Microcomputers", now known generically as PCs. For the last fifteen years it has specialised in high-reliability and secure computer communication systems in industry sectors such as Air Traffic Control, microprocessor manufacturers and the security and telecoms industries.

Current activities include VoIP Security, data recovery and forensic investigation, penetration testing and training.

Frank Leonhardt, known to many as the first Technical Editor for PCW Magazine and subsequent columns in the national press, is the principle consultant. He is currently writing a new handbook on digital security.

FJL Microsystems is based in London and can be telephoned on  020 8429 3047 or sip: This email address is being protected from spambots. You need JavaScript enabled to view it.

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Original 1993 Web Site