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.

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

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

We dive into a VIP Keylogger campaign, with two defense evasion techniques (steganography and remote template injection) and how you can look for them.

Threat Hunting and Intelligence

VIP Keylogger 2.0

Mar 06, 2025 2 min read

We dive into a phishing campaign that uses an AI augmented app developer tool to create a captcha style page to help bypass automated spam filters.

Threat Hunting and Intelligence

A Phisher’s Love Affair With AI

Feb 28, 2025 2 min read

We explain what Alternate Data Streams and Extended Attributes are, why threat actors like them, and some things to look for that could indicate abuse.

Threat Hunting and Intelligence

Alternate Data Streams and Extended Attributes

Feb 05, 2025 2 min read

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Beyond contracting officers and primes, your SPRS score is on file with the federal government. If a cyber incident occurs and DoD investigators are examining your compliance history, your SPRS submission is part of the record.

Regulatory Compliance

What is SPRS? How Defense Contractors Are Scored on Cybersecurity

May 26, 2026 8 min read

Regulatory Compliance

What is DFARS 252.204-7012? A Guide for Defense Contractors

May 14, 2026 8 min read

Regulatory Compliance

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

Apr 13, 2026 6 min read

On May 18, 2026, RADICL observed an intrusion on a Windows endpoint originating from a trojanized ArcGIS Pro installer downloaded from a typosquatted domain.

Threat Hunting and Intelligence

Trojanized ArcGIS Installer Drops Dual-Channel RAT

May 28, 2026 8 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

Jacob Evans is IT Manager at two aerospace companies, where RADICL is a trusted cybersecurity and compliance partner.

Industry Analysis

How a Solo IT Manager Covers 100 Users & Two Companies with RADICL

Jun 08, 2026 7 min read

Koontz Electric passed its C3PAO assessment with help from the RADICL team.

Industry Analysis

How Koontz Electric Passed CMMC Level 2 with a 3-Person IT Team

Jun 01, 2026 5 min read

In this testimonial, Caitlin talks about what it's really like working with the RADICL team day-to-day: the responsiveness, the depth of expertise, and the honest guidance that keeps clients on the right track, even when that means redirecting internal efforts.

Industry Analysis

Havoc AI: CMMC Level 2 Compliance with a Team That Actually Cares

Apr 30, 2026 3 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

EP 9 - Palo Alto Networks' Daryan Dehghanpisheh on Vulnerability Management

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 100 — Outlander VC's Paige Craig On Funding Defense's Black Sheep Before Anyone Else Will

Jun 04, 2026 1 min read

DIB Innovators

EP 99 — AI Strategy Corporation's David Mroczka On Cutting U.S. Army Tech Scouting From 12 Months To 2 Weeks

May 28, 2026 1 min read

DIB Innovators

EP 98 — AimLock's Bryan Bockmon on Keeping Humans in the Kill Decision While Automating the Rest

May 21, 2026 1 min read