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

Just How Lucrative is Cybercrime? According to New Charges Against One Gang, $30 Million Lucrative

The recent arrest and charging of a gang of 24 U.S.-based cybercriminals in Atlanta demonstrates how easy it is to become a cybercriminal and use social engineering tactics to fool people ...

Urgency Around the Coronavirus Leads to Phishing Scams Targeting Healthcare

As if the virus itself wasn’t bad enough, lowlife scammers are using the pandemic to trick healthcare workers into giving up credentials. Elite hackers tried to break into the World ...

Organizations Need To Be Wary Of Home Worker Phishing Risks

Security experts warn that phishing attacks against home workers will rise.

Critical Considerations to Improve Your Remote Employee Security During the COVID-19 Pandemic

Quickly evolving travel and social requirements in response to COVID-19 mean that, like it or not, many organizations like yours are asking traditional office-based employees to work from ...

Human Behavior is What Makes Phishing Attacks So Successful

The problem isn’t the lack of software designed to detect, prevent, and protect – it’s that human response is a required part of every phishing attack that users seem to be happy to ...

Healthcare Providers Suffer 350 Percent Increase in Ransomware Attacks

The lack of proper security technologies in place is largely to blame for the massive increase in ransomware attacks in Q4 of 2019 as compared to the same time the previous year.

Domains Use Homographic Characters to Create Hard to Spot Phishing URL's

Website domains can use homographic characters to create very hard-to-spot phishing URLs, Threatpost reports. Cybersecurity researcher Avi Lumelsky demonstrated how easy it is to create ...

FBI Sends Private Industry Notification Warning of BEC Techniques

The FBI sent out a Private Industry Notification (PIN) warning companies that attackers are abusing Microsoft Office 365 and Google’s G Suite to launch business email compromise (BEC) ...

U.K. Revenue Collector Data Shows Email Scams Are on the Decline in Favor of Vishing and SMiShing Attacks

Scams aimed at conning U.K. taxpayers out of money and credentials are reportedly experiencing shifts in mediums from email to phone and text.