Jamie Stephanie Guilford

Profile narrative

Jamie Stephanie Guilford, also known by her full name, is an individual based in the United States of America who was employed as a salaried senior consulting system engineer at Secure Data Technologies, Inc. from July 9, 2018 to February 23, 2020. During her tenure she allegedly signed a non‑compete agreement and was responsible for interfacing with the company’s client base on wireless, security and data center design, setup and integration. In February 2020 she is accused of hacking into Secure Data’s email system to review sensitive messages exchanged among the company’s management team, an action that triggered a security alert and subsequent investigation. The investigation reportedly revealed that she had granted herself unapproved access to the mailboxes of the CEO, CFO, an employee named Simonne Meszaros and one other Secure Data staff member, leading to her termination. After leaving Secure Data she formed Guilford Technologies, LLC, where she serves as CEO and registered agent, and allegedly used the confidential information she obtained to solicit one of Secure Data’s lucrative clients, Tacony Corporation.

The targeting described in the lawsuit focuses on the infrastructure technology sector, specifically companies that provide hardware, software, managed services and professional services in collaboration, data center, network and security domains, with the victim organization located in the United States. The strategic objectives cited by the plaintiff include financial gain through the misuse of proprietary client information and the solicitation of Secure Data’s clients, as well as preventing further disclosure or use of trade secrets that could harm the company’s competitive position. The alleged tactics involved gaining unauthorized access to executive email mailboxes, reviewing activity logs to confirm the intrusion, and then leveraging the obtained confidential data to establish a competing business and approach former clients. No specific malware families, initial access vectors or tooling styles are referenced in the available source material.

Attribution is limited to the individual Jamie Stephanie Guilford and her entity Guilford Technologies, LLC; no state sponsorship, criminal consortium or broader affiliations are publicly established in the provided information. The notable operation associated with this actor is the 2020 incident involving Secure Data Technologies, Inc., which resulted in a lawsuit filed in the Eastern District of Missouri on September 11, 2020, alleging breach of contract, computer fraud and misappropriation of trade secrets. The plaintiff seeks preliminary and permanent injunctions to block further use of the misappropriated information and monetary damages for the alleged harms. This case represents the sole publicly reported campaign linked to the actor based on the current evidence.

Incidents

Attributed incidents are available to members.