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

Ransomware Attacks Officially Hit a New Low and Go Where No Cyberattack Has Gone Before: Death

The past few months have seen ransomware quickly evolve to a place of ingenious sophistication, rampant greed, indifferent destruction, and the sad loss of life.

Cybercriminals Can Now Bypass Security Solutions and Implant Malicious Emails Directly into Inboxes with Email Appender

Taking advantage of IMAP functionality a new tool now available on the dark web empowers cybercriminals to circumvent mail scanners, virtual sandboxes, and other security solutions.

Scammers Target Singles Day Shoppers

Shoppers need to be on the lookout for scammers as Singles Day begins in China and other countries around the world, the BBC reports. Singles Day is the world’s largest online shopping ...

Emotet Makes Another Comeback with New Tactics, Techniques and Procedures

New analysis of Q3 shows Emotet attacks on the rise, complete with new methods and features that have impacted governments and enterprise businesses alike.

New “Election Interference” Phishing Scams Infect Victims with Qbot Trojan

At a time when tensions are high with questionable election results, lawsuits, and an apparent “president-elect”, makers of Qbot are taking full advantage of the opportunity.

University Research Shows Security Awareness Training is a Necessary Layer of Defense

A research paper in the Journal of Computer Information Systems says that security awareness training is a necessary complement to technical defenses and security policies, SC Magazine ...

Britain's Government Will Tackle Online Misinformation Claims on Anti-Vaccine

In a recent article by Reuters, the article covers a story from The Times on Britain's eavesdropping agency GCHQ is starting a plan to take on anti-vaccine propaganda that is being spread ...

Twitter Hack Only Took 24 Hours from Start to Takeover

A report from the New York Department of Financial Services covering the high-profile Twitter account hack from earlier in the year reveals how little time an attack takes to be ...

BEC Incidents Intent on Invoice or Payment Fraud Increase 155% Across All Industries

Business Email Compromise appears to be back in the saddle again, as attackers use simple social engineering and domain impersonation to trick victims into paying up.