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 February 2024, Change Healthcare — the largest medical claims processor in the United States — was hit by the ALPHV/BlackCat ransomware group. The attack disrupted billing systems at hospitals and pharmacies nationwide for weeks. The entry point? Stolen credentials used on a remote access portal that lacked multi-factor authentication. One
In 2020, threat actors compromised SolarWinds' Orion software and used it to breach dozens of U.S. government agencies. The attackers moved laterally through networks for months because once they were inside the perimeter, those networks trusted them. That single breach rewrote how the federal government thinks about network
In 2019, a Lithuanian national named Evaldas Rimasauskas pleaded guilty to stealing over $120 million from Google and Facebook using a sophisticated man in the middle attack scheme. He impersonated a legitimate hardware vendor, intercepted invoice communications, and redirected payments to bank accounts he controlled. The scheme ran for two
A Castle With No Walls Left to Defend In January 2024, Microsoft disclosed that the Russian threat actor Midnight Blizzard had compromised executive email accounts — not by breaching a firewall, but by password-spraying a legacy test tenant account that lacked multi-factor authentication. The attackers moved laterally for weeks before detection.
In April 2024, researchers at Akamai discovered a massive DNS hijacking campaign targeting financial institutions across Southeast Asia. Attackers poisoned DNS caches at the ISP level, silently redirecting thousands of banking customers to pixel-perfect phishing sites. Victims entered their credentials on pages that looked identical to their bank's
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
In early 2024, threat actors exploited critical vulnerabilities in Ivanti Connect Secure VPN appliances so aggressively that CISA issued an emergency directive ordering federal agencies to disconnect the devices entirely. Not patch them. Disconnect them. That moment should have been a wake-up call: having a VPN isn't enough.
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
A CFO Wired $25 Million Because of a Spoofed Video Call In early 2024, a finance worker at a multinational firm in Hong Kong transferred $25.6 million after joining a video conference call where every other participant — including the company's CFO — was a deepfake. The threat actors
In January 2024, Microsoft disclosed that the Russian threat actor Midnight Blizzard had breached corporate email accounts — not by exploiting some exotic zero-day, but by password spraying a legacy test tenant that lacked multi-factor authentication. One overlooked account. No MFA. Catastrophic access. If a company with Microsoft's resources
