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

One Out of Every Eight Emails Found to be Malicious as Attackers Continue to Hone Their Skills

An increase in the number of malicious emails being sent is resulting in more phishing attacks reaching inboxes. New data clarifies the factors that determine their malicious nature and ...

Vietnam-Based Cyber Groups Using Fake Job Postings to Deliver Malware

Several cybercriminal groups based in Vietnam are using fake job postings to trick users into installing malware, according to researchers at WithSecure. The researchers are tracking ...

A Brief History of Phishing, and Other Forms of Social Engineering

Social engineering attacks have a very long history, though the Internet has made it easier to launch these attacks en masse, according to Sean McNee at DomainTools. McNee points to an ...

QR Code Phishing on the Rise: The Alarming Findings From the Hoxhunt Challenge

As the digital landscape continues to evolve, so do the tactics of cybercriminals. The Hoxhunt Challenge, a comprehensive study conducted across 38 organizations spanning nine industries ...

Phishing-as-a-Service: As Simple As Uploading A Logo

Researchers at Fortra are tracking “Strox,” one of the most popular phishing operations of the past two years. Users of Strox phishing kits can easily create phishing campaigns by simply ...

CISA, NSA, FBI, and MS-ISAC Release Phishing Prevention Guidance

October 18, 2023, the Cybersecurity Infrastructure and Security Agency (CISA), the National Security Agency (NSA), the Federal Bureau of Investigation (FBI), and the Multi-State ...

Phishing Attacks Surge By 173% In Q3, 2023; Malware Threats Soar By 110%

A new report from Vade Secure has found that phishing attacks rose by 173% in the third quarter of 2023, while malware threats have increased by 110%.

Cyber Insurers Note Ransomware Claims Rose Significantly in the First Half of 2023

Cyber insurers are claiming that cybercriminals made ransomware attacks popular again in 2023 after a slight break in 2022.

Summit Sabotage: Malicious Phishing Campaign Hits Female Political Leaders Using Social Engineering

A threat actor dubbed “Void Rabisu” used social engineering to target attendees of the Women Political Leaders (WPL) Summit that was held in Brussels from June 7 to 8, 2023, Trend Micro ...