Our Team
At Digital Forensic Services, expertise isn’t siloed, it’s shared. Our team is made up of forensic analysts, cybersecurity specialists, former law enforcement, and legal professionals who work side-by-side on every case. We combine decades of investigative experience with deep technical skill to deliver results that are clear, defensible, and trusted.
We don’t just provide services—we build investigative partnerships grounded in precision, responsiveness, and strategic insight.
Sean Lanterman
Principal
Sean brings a decade of experience handling complex matters involving electronic evidence. As a licensed attorney and seasoned digital forensic expert, he’s known for his ability to make technical findings understandable and legally actionable.
Joseph Lanterman
Principal
Joseph combines a background in forensic analysis, cybersecurity, and project management to support high-stakes investigations. With dual degrees in accounting and certifications in digital forensics, Joseph brings analytical precision and operational oversight.
Nate Dittmar
Director
Nate is often the first point of contact for clients managing incident response, digital preservation, and timeline-sensitive analysis. With experience from Apple and Mayo Clinic, he brings technical versatility and real-world responsiveness to every project.
Chris Lester
Director
Chris is a 30-year FBI veteran and senior examiner known for his work on high-profile federal cases and his leadership in digital forensic education. He brings deep investigative skill and courtroom-tested credibility to complex criminal and civil matters.
John Stenmoe
Security Analyst
John blends an extensive background in cybersecurity with deep forensic capability. A certified ISO 27001 auditor and licensed investigator, John is known for strengthening security postures while uncovering key digital evidence.
Bill Michael
Senior Forensic Analyst
With more than two decades in law enforcement and forensic investigation, Bill is an expert in digital and mobile forensics. His credentials span federal certifications and national instruction in computer forensics.
The Locked Phone Problem: What Law Enforcement Needs to Know
It’s a challenge law enforcement professionals face regularly: a mobile phone likely holds key evidence—but it’s locked, and no one knows the passcode. Whether the device belongs to a deceased individual, an uncooperative suspect, or a missing witness, the data sits...
Copy ≠ Complete: Why Mobile Extractions Aren’t All the Same
When lawyers request phone data in discovery, the assumption is often this: once you have a copy, you have everything. But that belief can lead to critical mistakes. In mobile forensics, how data is extracted matters just as much as whether it’s been collected at...
What Lawyers Miss About Phone Data
What Lawyers Miss About Phone Data For most of us, mobile phones are an ever-present part of daily life. They’re where we manage schedules, communicate, navigate, document, and remember. In litigation, these devices often hold vital evidence like location data,...