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.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman of KnowBe4, Inc., which hosts the world’s most popular integrated security awareness training and simulated phishing platform, with over 54,000 organization customers and more than 50 million users. A serial entrepreneur and data security expert with 30 years in the IT industry, Stu was the co-founder of Inc. 500 company Sunbelt Software, a multiple award-winning anti-malware software company that was acquired in 2010.


Recent Posts

The FBI’s Internet Crime Complaint Center Marks Its 6 Millionth Complaint as Pace Accelerates

The rate at which cyberattacks are increasing are being noticed by both their victims and the FBI, who are seeing more people affected by online crimes and scams.

Credential Stuffing the Financial Services Sector

Credential stuffing in the financial services industry has risen significantly over the past year, according to Akamai’s latest State of the Internet / Security report. Credential ...

When Cryptocurrency Investments Really Are Too Good To Be True

The US Federal Trade Commission (FTC) reports that victims have lost more than $80 million in cryptocurrency scams since October of last year, with about $2 million of that total going to ...

Transparent Tribe Uses Spoofed Domains in Social Engineering Attacks

Researchers at Cisco Talos warn that the threat actor known as “Transparent Tribe” (also known as APT36 and Mythic Leopard) is using spoofed websites and malicious documents to deliver ...

[NEW PhishER Feature] Flip the Script on Phishing Emails with PhishFlip

We are excited to announce the availability of PhishFlip™ as part of the PhishER product to all PhishER customers.

Ransoms Increase 43% as More Ransomware Attacks Include the Threat to Leak Exfiltrated Data

With average payments rising to over $220K, organizations scramble to stop ransomware attacks as gangs begin taking more advantage of software vulnerabilities as their attack vector.

Healthcare Organizations Should Expect Cyber Insurance Premiums to Increase 25 to 50% This Year

In light of recent upticks in payouts – particularly around ransomware – cyber insurers are better understanding the risk and are adjusting rates accordingly.

Kicking You While You’re Down: Ransomware Attacks Begin to Adopt a “Triple Extortion” Model

New tactics spotted by security researchers at CheckPoint indicate a growing pattern by ransomware gangs to use additional extortion actions to increase revenues and ensure payment.

Ransomware Attack Demands Cause Cyber Insurance Claim Amounts to Skyrocket

The perfect storm of large enterprises, cyber insurance policies, successful ransomware attacks, and ransom demands in the tens of millions now consistently result in seven-figure claim ...

New Verizon DBIR: Credentials Stolen in 85% of Social Engineering Breaches

Verizon’s latest data breach report puts a spotlight on one of the largest and most unpredictable risk factors in your cybersecurity strategy – your users.