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Email Security

Comprehensive guides on protecting email accounts and infrastructure from cyber threats. Covers email authentication protocols like SPF, DKIM, and DMARC, encryption best practices, spam filtering, and organizational policies that reduce the risk of email-based attacks.

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Phishing

What Is Phishing? A Security Pro's Real-World Guide

A Single Email Cost This Company $100 Million In 2017, a Lithuanian man tricked Google and Facebook employees into wiring over $100 million to bank accounts he controlled. His weapon wasn't malware. It wasn't a zero-day exploit. It was email. He sent invoices that looked like

Carl B. Johnson Apr 05, 2026 5 min read
Phishing Email Detection

How to Recognize a Phishing Email Before You Click

In March 2024, a finance director at a mid-size manufacturer in Ohio wired $2.3 million to a threat actor who impersonated the company's CEO — all because of a single phishing email. The message looked perfect: right logo, right tone, right email signature. It even referenced an actual

Carl B. Johnson Apr 04, 2026 5 min read
Phishing Awareness

How to Spot a Phishing Email Before It Costs You

In July 2021, a single phishing email gave attackers access to an employee's credentials at a Florida managed service provider, which cascaded into the massive Kaseya VSA ransomware attack affecting up to 1,500 businesses worldwide. One click. One employee who didn't know how to spot

Carl B. Johnson Aug 31, 2021 8 min read
Phishing

What Is Phishing? The Attack Behind 36% of Breaches

In March 2021, a massive phishing campaign impersonating Microsoft Office 365 hit over 10,000 mailboxes across the financial services sector in a single week. The emails were nearly flawless — correct logos, legitimate-looking sender domains, and urgent language about password expiration. Dozens of employees handed over their credentials before anyone

Carl B. Johnson Aug 31, 2021 7 min read
Fake Email

Fake Email: How to Spot, Stop, and Survive One

A Single Fake Email Cost Facebook and Google $120 Million Between 2013 and 2015, a Lithuanian man named Evaldas Rimasauskas sent a series of fake email messages to employees at Facebook and Google. He impersonated a legitimate hardware vendor, complete with forged invoices and contracts. By the time both companies

Carl B. Johnson Aug 31, 2021 7 min read
Phishing

Phishing: Why 36% of Breaches Start in Your Inbox

The Inbox Is the Front Door — And It's Wide Open According to the 2021 Verizon Data Breach Investigations Report, phishing is involved in 36% of all confirmed data breaches. That number jumped 11 percentage points from the year before. Let that sink in — more than a third of

Carl B. Johnson Aug 31, 2021 7 min read
Phishing Definition

Phishing Definition: What It Really Means in 2021

In March 2021, a single phishing email led to a credential theft incident at a European banking authority that exposed personal data from thousands of email accounts. The attack wasn't sophisticated. It didn't exploit some exotic zero-day vulnerability. It started with a convincing email and a

Carl B. Johnson Aug 25, 2021 7 min read
Spear Phishing

Spear Phishing: Why Targeted Attacks Beat Your Defenses

In July 2020, a teenager from Florida used spear phishing to compromise the internal tools at Twitter, hijacking 130 high-profile accounts — including those of Barack Obama, Elon Musk, and Apple — to run a Bitcoin scam. The attack didn't exploit some exotic zero-day vulnerability. It started with targeted messages

Carl B. Johnson Aug 24, 2021 7 min read
Spoofing

Spoof Attacks: How Threat Actors Impersonate You

In July 2021, the FBI's Internet Crime Complaint Center reported that business email compromise — overwhelmingly powered by spoof techniques — cost victims over $1.8 billion in 2020 alone. That made it the single most financially damaging category of cybercrime they tracked. Not ransomware. Not credential theft. Spoofing-driven impersonation.

Carl B. Johnson Aug 24, 2021 8 min read