Josh Shepard

Josh Shepard

Josh has spent his career hunting for and neutralizing nation-state threat actors targeting critical infrastructure. During his time with the USAF, he led a team of threat hunters pursuing advanced persistent threats (APTs) targeting the defense industrial base, energy, transportation, and water/wastewater sectors. From there he transitioned to Ro, a startup in the healthcare sector, where he built and led a threat intelligence and threat hunt program operating on a multi-cloud, multi-operating system environment.

We explore how to conduct threat hunts for network focused TTP using only Endpoint Detection and Response (EDR) data.

Threat Hunting and Intelligence

Network TTP Hunting with EDR Data

Oct 25, 2024 2 min read

We’ll focus on a critical technique that is widely utilized by various threat actors, from sophisticated nation-state adversaries to opportunistic cybercriminals.

Threat Hunting and Intelligence

Understanding T1543 to Create or Modify System Processes

Oct 18, 2024 3 min read

As a security practitioner and threat hunter extraordinaire, your goal is to identify anomalies in their daily behavior that could indicate suspicious activity.

Attack Surface and Vulnerability Management

Snitches Get Stitches – MITRE ATT&CK for Insider Threat Detection

Aug 26, 2024 1 min read

RADICL recently observed a sophisticated phishing campaign designed to steal O365 login credentials.

Threat Hunting and Intelligence

Sharing is Caring – Novel SharePoint Phishing Campaign

Jul 17, 2024 3 min read

Ransoming an espionage victim carries several advantages that can make it an ideal move for nation-state threat actors.

Incident Response

I Spy a Ransomware Attack

Jul 16, 2024 2 min read

The Pyramid of Pain is a conceptual model created by David Bianco in 2013 that helps detection engineers and analysts understand how to best use threat intelligence to halt threat actors.

Threat Hunting and Intelligence

Pyramid of Pain: You Can't Tie Your Shoes That Way

Jul 02, 2024 3 min read

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Regulatory Compliance

CMMC Compliance Deadline 2026: Key Dates That Affect Your DoD Contract

Apr 13, 2026 6 min read

Regulatory Compliance

CMMC Readiness Assessment: 7 Top Compliance Mistakes That Delay Readiness

Apr 13, 2026 9 min read

Regulatory Compliance

Top NIST 800-171 Compliance Services Providers (2026)

Mar 27, 2026 10 min read

This is a detailed breakdown of a malicious VBS script discovered on an endpoint within RADICL’s customer base as a result of RADICL’s custom EDR detection logic. The script executes a multi-stage attack designed to achieve persistence, evade detection, and deploy a secondary payload.

Threat Hunting and Intelligence

Multi‑Stage VBScript Malware Analysis

Jul 23, 2025 7 min read

An initial access broker is a type of threat actor specializing in gaining initial persistent access to an environment.

Threat Hunting and Intelligence

Unmasking the Toy Maker Initial Access Broker

May 20, 2025 2 min read

In this campaign, Lazarus Group tricks a user into running a malicious script on their machine by having them apply for a job that is just a little too good to be true.

Threat Hunting and Intelligence

Too Good To Be True

May 01, 2025 3 min read

DIB Innovators

David Dickey on Scaling Defense Tech Hiring

Apr 30, 2026 1 min read

DIB Innovators

Jonathan Slavik on Payload Handoffs in Hours, Not Months

Apr 23, 2026 1 min read

DIB Innovators

Jackson Moses on Why Dual Use Is a Dirty Word in Defense Tech

Apr 16, 2026 1 min read

Incident Response

What Are Incident Response Solutions?

Apr 13, 2026 7 min read

On the evening of 7/25/24, CrowdStrike pushed a content update which caused Windows systems to crash and/or enter a reboot loop, rendering the systems unusable.

Incident Response

A Day in the Life: Our vSOC Responds to the CrowdStrike Incident

Jul 24, 2024 2 min read

Ransoming an espionage victim carries several advantages that can make it an ideal move for nation-state threat actors.

Incident Response

I Spy a Ransomware Attack

Jul 16, 2024 2 min read

There was a joint advisory this week (AA26-097A) warning of active exploitation of internet-facing Programmable Logic Controllers (PLCs).

Attack Surface and Vulnerability Management

Iranian APT Actors Are Targeting Your PLCs — Here's What to Do

Apr 09, 2026 2 min read

Attack Surface and Vulnerability Management

CMMC Enclave: What It Is, When It Works, and How to Build the Right Compliance Boundary

Mar 26, 2026 11 min read

Attack Surface and Vulnerability Management

Daryan Dehghanpisheh on Extending Vulnerability Management to AI

Jan 23, 2026 1 min read

Security Operations & vSOC

Top SOC Service Providers (SOCaaS) for 2026

Mar 26, 2026 11 min read

Security Operations & vSOC

Best MDR Providers for Regulated Industry & DIB Contractors (2026)

Mar 12, 2026 16 min read

DIB Innovators

Cyber Resilience at the Crossroads

Apr 10, 2025 2 min read

Micro-Ant's Charles McCarrick on Innovation and Opportunity in the DIB

DIB Innovators

Ep 1: Charles McCarrick on Innovation and Opportunity in the DIB

Dec 08, 2023 2 min read

DIB Innovators

EP 97 — Teague's Matt McElvogue on Why Operators Stop Trusting the Tech & Start Working Around It

May 12, 2026 1 min read

DIB Innovators

David Dickey on Scaling Defense Tech Hiring

Apr 30, 2026 1 min read

DIB Innovators

Jonathan Slavik on Payload Handoffs in Hours, Not Months

Apr 23, 2026 1 min read