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

Amazon Prime Day Alert: Beware of Fake Logins, Gift Card Scams

A new threat alert from ConsumerAffairs and TrendMicro proves more than just shoppers will take advantage of Amazon’s upcoming Prime Day.

The Number of Phishing Attack Cases in Singapore Jump by 185%

The latest data provided by the Singapore Cyber Emergency Response Team (SingCERT) shows the number of attacks trending in the wrong direction, with some indicators that the good guys ...

U.K. Twitter Impersonation Hacker Sentenced to Prison in the U.S.

The British national responsible for hacking into and impersonating high-profile individuals as part of a crypto theft scheme has been sentenced to five years in prison.

Free Unsolicited Smartwatch in the Mail and I’m in the Military? What Could Possibly Go Wrong???

From the “shaking our heads” files comes the story of how threat actors compromised military personnel mobile devices, credentials, accounts and more.

Camaro Dragon APT Group Continues to Employ USB Devices as Initial Attack Vector

Apparently expanding efforts outside of Southeast Asian countries, this threat group’s known malware has shown up in a European healthcare facility, raising concerns for USB-based attacks.

Email-Based Cyber Attacks in Europe Increase 7-Fold in Just One Year

An abnormally massive focus on business email compromise attacks in Europe has fueled an equally large growth in overall email attacks there, with the U.S. also seeing significant attack ...

Microsoft Teams Cyber Attack Exploit Tool Relies on Social Engineering to Deliver Malware

If your organization uses Microsoft Teams, then you definitely want to hear about a new way bad actors are exploiting this newly discovered cyber attack tool.

New Report Shows Social Engineering and Business Email Compromise Attacks Have Drastically Increased in 2023

Email-based social engineering attacks have risen by 464% this year compared to the first half of 2022, according to a report by Acronis. Business email compromise (BEC) attacks have also ...

Nerve Center: Protect Your Network Against New Ransomware Strains with Our Latest RanSim Update

Ransomware continues to be a major threat for all organizations and, according to the Verizon 2023 Data Breach Investigations Report, is still present in 24% of breaches.

Threat Actors are Using Image-Based Phishing Emails to Lure Victims

Attackers are increasingly using images in phishing to evade text-based security filters, according to researchers at INKY.