Syscall7 is a software development and security analysis consulting firm located in the greater Baltimore, MD region. We specialize in firmware development, system-level software development, and software security analysis. We provide firmware and software development and consulting services at all levels of the software stack, including low level assembly, Linux internals and kernel-level development, custom network protocol development, and system-level C and C++ development on Windows, Linux, FreeBSD, and other proprietary operating systems. We are subject matter experts who know how to design and implement custom and complex software solutions as well as assess the security posture of systems and software designed by others.

Our team knows software security.  We analyze software and systems to identify vulnerabilities and security weaknesses that place these systems at risk for malicious intrusion. This includes both system level software and application software in Windows, Linux, and other proprietary operating systems. We analyze medical devices, critical infrastructure devices, industrial control systems, and SCADA (Supervisory Control and Data Acquisition) systems for vulnerabilities and recommend techniques and methods for mitigating the risks posed by the weaknesses uncovered.

  • GIAC Certified Firewall Analyst (GCFW)
  • GIAC Security Expert (GSE)
  • GIAC Certified Penetration Tester
  • GIAC Certified Intrusion Analyst
  • GIAC Security Essentials Certification
  • GIAC Certified Incident Handler
  • Certified Ethical Hacker (CEH)
  • GIAC Certified Forensic Analyst (GCFA)
  • Android
  • Linux
  • Assembly Language (x86, MIPS, ARM, PowerPC)
  • Reverse Engineering with IDA Pro and Ghidra
  • Bluetooth
  • USB


Our team has a wide array of experience in both software development and security analysis. We put together a project team that is tailored to each job that we take on. You can read our bios below  to understand our individual areas of expertise.

Anthony DeRosa
Anthony DeRosaCEO
David Shepherd
David ShepherdPresident
Bill Davis
Bill DavisDirector of Engineering
Justin McDowell
Justin McDowellSenior Embedded Developer
Mike Ross
Mike RossPrincipal Vulnerability Researcher
Jim Harding
Jim HardingPrincipal Embedded Developer
Adam McKibben
Adam McKibbenSenior Vulnerability Researcher
Paul Kohout
Paul KohoutPrincipal Software Engineer