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Zero Trust Network Access

Articles explaining Zero Trust Network Access principles and implementation strategies. Covers identity verification, least-privilege access, micro-segmentation, continuous authentication, and how ZTNA architectures replace traditional perimeter-based security models to protect modern distributed environments.

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Zero Trust Network Access

Zero Trust Network Access: A Practical Guide for 2026

The Breach That Started Behind the Firewall In 2023, MGM Resorts lost an estimated $100 million after a threat actor social-engineered their way past the help desk with a single phone call. The attacker didn't punch through a firewall. They didn't exploit some exotic zero-day. They

Carl B. Johnson Apr 24, 2026 5 min read
Zero Trust Network Access

Zero Trust Network Access: A Practical Guide for 2026

In January 2024, Microsoft disclosed that a Russian-linked threat actor — Midnight Blizzard — breached corporate email accounts by exploiting a legacy test tenant that lacked multi-factor authentication. No zero-day. No sophisticated exploit chain. Just a password spray against an old account that trusted the network it sat on. That's

Carl B. Johnson Mar 30, 2026 5 min read
Zero Trust Network Access

Zero Trust Network Access: A Practical 2025 Guide

The VPN That Let Attackers Walk Right In In January 2024, the Cybersecurity and Infrastructure Security Agency (CISA) confirmed that Chinese state-sponsored threat actors had exploited Ivanti Connect Secure VPN vulnerabilities to breach multiple U.S. federal agencies. The attackers didn't kick down the door. They walked through

Carl B. Johnson May 25, 2025 7 min read
Zero Trust Network Access

Zero Trust Network Access: A Practical Guide for 2024

The VPN Is Dead. The Breach That Proved It. In May 2023, a threat actor used stolen VPN credentials to breach a major U.S. government contractor, moving laterally across the network for weeks before detection. The attacker didn't exploit some exotic zero-day. They logged in with a

Carl B. Johnson Dec 09, 2023 7 min read
Zero Trust Network Access

Zero Trust Network Access: A Practical Guide for 2022

In May 2021, Colonial Pipeline paid a $4.4 million ransom after a single compromised VPN credential gave attackers the keys to the kingdom. One password. No multi-factor authentication. No segmentation between IT and operational technology networks. The attackers from the DarkSide group walked through a flat network like it

Carl B. Johnson Jan 15, 2022 7 min read
Zero Trust Network Access

Zero Trust Network Access: A Practical Guide for 2021

The SolarWinds Breach Just Proved Your Perimeter Is Dead As I write this in December 2020, we're watching one of the most devastating supply chain attacks in history unfold. The SolarWinds breach — disclosed just days ago — compromised U.S. government agencies and major corporations by exploiting trusted software

Carl B. Johnson Dec 12, 2020 7 min read
Zero Trust Network Access

Zero Trust Network Access: A Practical Guide for 2026

The Breach That Proved Perimeter Security Was Dead In early 2024, a threat actor gained access to Microsoft's corporate email system — including accounts belonging to senior leadership and cybersecurity staff. The attacker didn't exploit some exotic zero-day. They used a password spray attack against a legacy

Carl B. Johnson Sep 28, 2019 8 min read