KnowBe4 Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in human and agent security including social and prompt engineering, ransomware and phishing attacks.

Roger Grimes

CISO Advisor

Roger A. Grimes, CISO Advisor for KnowBe4, Inc., is the author of 15 books and over 1500 articles, specializing in host security and preventing hacker and malware attacks. Roger is a frequent speaker at national computer security conferences and his presentations are fast-paced and filled with useful facts and recommendations.
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Recent Posts

Xfinity Scam Might Explain Similar Scams

Recently, I covered a T-Mobile scam where a friend of mine narrowly avoided losing money. In that scam, the attackers called up pretending to be from T-Mobile offering him a ...

A Sneaky T-Mobile Scam and Lessons That Were Learned

A friend of mine got a call on his phone and he regrettably picked it up. The number was 267-332-3644. The area code is from Bucks County, PA, where he used to live many years ago.

What Is Device Code Phishing?

Ever since Microsoft’s initial announcement on February 13, 2025, about a Russian nation-state phishing campaign using "device code phishing," many people have been wondering what it is. ...

[Scary] A New Real Cash Scam Sweeps Across the U.S. Warn Your Family and Friends!

Right now, today, thousands of people are being tricked into going to their banks or credit unions to withdraw large sums of cash and will give or send it to a complete stranger, never to ...

Scammers Can Be Victims Too

There are thousands of people worldwide trying to scam you, hoping they can make you a victim, steal your money, and harm you in some way. While some of it is done by individuals or small ...

Make Your Real Emails Less Phishy

I infrequently get emails from customers who are frustrated because their employer sent out some legitimate mass email to all employees that unfortunately had all the hallmarks of a ...

Autonomous Agentic AI-Enabled Deepfake Social Engineering Malware is Coming Your Way!

I’ve been in the cybersecurity industry for over 36 years. Surprisingly, hackers and malware haven't changed all that much.

Software Will Become Agentic and the Security Lessons We Need To Learn

Ever since OpenAI publicly released ChatGPT in late 2022, people have been predicting the end of programmers.

Primary Refresh Tokens Aren’t Your Parent’s Browser Token

If you haven’t been paying attention closely enough, a new type of access control token, like a super browser token on steroids, is becoming hackers' theft target of choice.