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

Unprecedented Rise of Malvertising as a Precursor to Ransomware

Cybercriminals increasingly used malvertising to gain initial access to victims’ networks in 2023, according to Malwarebytes’s latest State of Malware report.

81% of Organizations Cite Phishing as the Top Security Risk

Organizations are finally dialing in on where they need to focus their cybersecurity strategies, starting with phishing. But the top four cited security risks all have one element in ...

Chinese Hackers Spy on Dutch Ministry of Defense: A Story of Alarming Cyber Espionage

In a revelation that adds yet another chapter to the ongoing saga of international cybersecurity threats, the Dutch Ministry of Defense recently shed light on a significant security ...

[On-Demand Webinar] How to Fight Long-Game Social Engineering Attacks

Sophisticated cybercriminals are playing the long game. Unlike the typical hit-and-run cyber attacks, they build trust before laying their traps. They create a story so believable and ...

Generative AI Used to Launch Phishing Attacks

Criminal threat actors are increasingly utilizing generative AI tools like ChatGPT to launch social engineering attacks, according to researchers at Check Point.

Fake “I Can’t Believe He’s Gone” Posts Seek to Steal Facebook Credentials

A new scam relies on a victim's sense of curiosity, brand impersonation, and the hopes of a new login to compromise Facebook credentials.

New Phishing-As-A-Service Kit with Ability to Bypass MFA Targets Microsoft 365 Accounts

A phishing-as-a-service platform called “Greatness” is facilitating phishing attacks against Microsoft 365 accounts, according to researchers at Sucuri.

Social Engineering Masterstroke: How Deepfake CFO Duped a Firm out of $25 Million

Check out this one line for a moment...“duped into attending a video call with what he thought were several other members of staff, but all of whom were in fact deepfake recreations.”

Vendor Email Compromise Attacks Against Financial Services Surge 137% Last Year

Analysis of 2023 attacks shows how the financial services industry had a very bad year, with increases in both vendor email compromise (VEC) and business email compromise (BEC) attacks, ...

Microsoft Teams: The New Phishing Battlefront - How Attackers Are Exploiting Trusted Platforms

Attackers are abusing Microsoft Teams to send phishing messages, according to researchers at AT&T Cybersecurity.