David Sun


  • Master of Science in Electrical Engineering, Virginia Tech
  • Bachelor of Science in Electrical Engineering, Virginia Tech


David is a Principal with CliftonLarsonAllen LLP. David’s expertise includes cybersecurity response, responding to data breach and privacy incidents including ransomware attacks, internal employee malfeasance and government agency investigations for both public and private sector clients.

With over twenty-five years of technical experience, David Sun has delivered expert services to clients involving data and systems security, cyber forensic response and post-breach remediation. David is a practical problem solver and technologist, who can describe technology-related issues in understandable terms to attorneys, judges and juries. He has served as an expert on numerous high-profile matters and has testified in various courts.

David is a testifying expert in federal and state courts in the areas of computer forensics and cyber security and he has served as a court appointed independent expert in these fields. He previously served as an Adjunct Professor at George Mason University and is routinely a faculty member for the Virginia and Massachusetts State Bars’ continuing education programs. David also has multiple patents and publications in the field of Computer Forensics.

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