Jamie Brock Grubb Gets 16 Years for Child Porn, Cyberstalking

Jamie Brock Grubb, a 31-year-old Bozeman resident, was sentenced to 16 years in federal prison on May 16 for distributing child pornography and cyberstalking a minor girl he once dated. U.S. Attorney Kurt Alme confirmed the sentence, which marks the end of a years-long investigation into Grubb’s predatory online behavior and digital surveillance of his victim.

Grubb pleaded guilty in January to 10 federal counts, including seven counts of distributing child pornography, transportation of child pornography, cyberstalking, and intercepting wire, oral, and electronic communications. Chief U.S. District Judge Dana L. Christensen handed down the sentence, which also includes 20 years of supervised release and a $50,000 restitution order to the victim.

According to court documents, Grubb began a relationship with the girl when she was still a minor in 2011. During that time, he took sexually explicit images of her. The victim also took and sent self-generated explicit images to Grubb. Between 2015 and 2017, Grubb distributed those images across multiple websites—without her knowledge or consent.

Gallatin County Sheriff’s Office detectives executed search warrants on Grubb’s email accounts and discovered he had emailed the explicit images and a video of the victim to himself, effectively transporting them across state lines. Forensic analysis of the victim’s smartphone and devices in Grubb’s possession revealed spytracker software installed on her phone—software also found on Grubb’s own device.

Investigators uncovered further evidence of Grubb’s digital stalking: audio recordings of the victim’s private phone calls with third parties, intercepted and stored on his phone. Prosecutors said the surveillance was systematic and designed to maintain control over the victim long after their relationship ended, violating her privacy and safety for years.

The case was prosecuted by Assistant U.S. Attorney Cyndee Peterson and investigated by a coalition of law enforcement agencies, including Montana Probation and Parole, the Gallatin County Sheriff’s Office, Homeland Security Investigations, and the Internet Crimes Against Children Task Force. Authorities called the investigation a textbook example of how digital tools can be weaponized against vulnerable victims.