Covers strategies, tools, and best practices for protecting computer networks from unauthorized access, cyberattacks, and data breaches. Topics include firewalls, intrusion detection systems, network segmentation, and monitoring techniques that help organizations maintain secure and resilient infrastructure.
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In 2023, the U.S. Marshals Service suffered a major breach when a threat actor compromised a system containing sensitive law enforcement data — personal information on investigative targets, internal processes, and more. The agency had traditional perimeter defenses in place. What they didn't have was a model that
In January 2024, Microsoft disclosed that a Russian threat actor group known as Midnight Blizzard had accessed senior executive email accounts — not by exploiting some exotic zero-day, but by spray-attacking a legacy test account that lacked multi-factor authentication. One account. No MFA. That's all it took to breach
3389: The Port That Keeps Giving — to Attackers In 2023, the FBI's Internet Crime Complaint Center flagged Remote Desktop Protocol (RDP) as the single most common initial access vector in ransomware incidents reported to law enforcement. Not phishing. Not USB drives. RDP. And yet, in 2026, I still
In 2024, Ivanti disclosed critical vulnerabilities in its VPN appliances — CVE-2024-21887 and CVE-2023-46805 — that were actively exploited by threat actors before patches were available. CISA issued an emergency directive ordering federal agencies to disconnect affected devices within 48 hours. That's not a drill. That's your VPN
In January 2024, the FBI's Internet Crime Complaint Center flagged business email compromise — much of it powered by man in the middle attack techniques — as responsible for over $2.9 billion in adjusted losses during 2023 alone. That number isn't slowing down. I've investigated
In April 2022, researchers at Tsinghua University and the University of California disclosed a new class of DNS cache poisoning vulnerabilities affecting major DNS software. The attack, dubbed "MaginotDNS," could redirect users from legitimate banking and email sites to pixel-perfect phishing pages — and the victims never saw a
In 2023, the FBI's Internet Crime Complaint Center reported over $12.5 billion in losses from cybercrime — and a staggering percentage of those incidents started with a single piece of software pretending to be something it wasn't. Trojan horse malware remains one of the most effective
In early 2024, Change Healthcare — one of the largest health payment processors in the United States — was brought to its knees by the ALPHV/BlackCat ransomware group. The initial entry point? A Citrix remote access portal without multi-factor authentication. That single vulnerability led to the exfiltration of data affecting roughly
Your Employees Typed the Right URL — And Still Got Hacked In April 2022, researchers at Avast documented a campaign where a threat actor compromised home routers and used DNS hijacking to redirect users from legitimate banking sites to pixel-perfect phishing clones. Victims typed the correct URL into their browser. Their
In January 2024, Microsoft disclosed that a Russian state-sponsored threat actor — the group known as Midnight Blizzard — breached corporate email accounts by exploiting a legacy test tenant that lacked multi-factor authentication. Microsoft. One of the most well-resourced technology companies on the planet. If they can get caught with a gap
