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

DNS Hijacking Almost Always Starts With A Successful Spear Phishing Attack

On Jan. 22, 2019, the Cybersecurity and Infrastructure Security Agency (CISA), which is a part of the U.S. Department of Homeland Security (DHS), issued Emergency Directive 19-01. The ...

Social Engineering Testing: Why Getting Hacked Is a Security Advantage

Stephanie Carruthers, People Hacker for IBM- X-Force Red wrote an excellent post about the need for red-teaming and pentesting your own organization. I'll quote the first paragraph or so, ...

Experts Warn to Expect More Targeted and Effective Ransomware and Phishing Attacks in 2019

While attack types do not appear to be changing in the coming year, experts see cybercriminals getting better at their craft, making it easier to separate you from your money and ...

Online Job Offer Turns Would-Be Applicant into Unwitting Conspirator in Malware Attack

The context of contacting the victim via a credible website may be all that was needed to trick one job seeker into installing malware on the network of a bank.

Grand Jury Duty Vishing Fraud: A New Twist on an Old Scam

Vishing - phone-based “voice phishing” – attacks are alive and well, taking victims of their time, emotions, and money. This new scam can scare you into becoming a victim.

[Heads-up!] New 'Anatova' Ransomware Disguised As A Game. Warn Your Users

The ransomware strain was discovered in a private peer-to-peer (p2p) network and targets consumers by using the icon of a game or application to trick the user into downloading it.

[Krebs on Security] How the U.S. Govt. Shutdown Harms Security

Krebs on Security has posted a new item. The ongoing partial U.S. federal government shutdown is having a tangible, negative impact on cybercrime investigations, according to interviews ...

Criminals Make Off With USD $150,000 in Business Email Compromise Real Estate Scam

Scammers stole $150,000 from a woman during a real estate transaction last year, according to Lisa Vaas at Naked Security. Mireille Appert, a Swiss woman who lives in the United States, ...

Social Oversharing, Online Quizzes, and Prizes are the Makings of a New Form of Phishing

Phishing is moving beyond the Inbox to your online experience in an effort to collect personal details and share out the attack on social networks, according to a new report from Akamai ...

Chinese Hackers Take Phishing and CEO Fraud to Another Level Raking in $18.6 Million

A talented group of Fraudsters used phishing, social engineering, and pure chutzpah to convince the India arm of Italian engineering company Tecnimont to part with millions of dollars.