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

Losses From Investment Scams have Increased Six-Fold Since 2021

The Better Business Bureau (BBB) has observed a six-fold increase in losses from investment scams over the past three years. The BBB has received more than 4,000 reports of investment ...

Election-Themed Scams Are on the Rise

Researchers at Malwarebytes warn of a surge in election-themed scams ahead of November’s presidential election in the US. These attacks can be expected to increase as the election grows ...

Use of Malicious Links Surges by 133% in Q1, Setting the Tone for the First Half of 2024

Threat actors are opting for malicious links over attachments in email-based attacks because it gives them a critical advantage that many solutions can’t address.

Phishing Attack Takes a Two-Step Approach to Leverage Legitimate Sites and Evade Detection

Analysis of a new phishing attack demonstrates how attackers may take a longer path to reach their malicious goals while staying “under the radar” of security products.

Manufacturing Sector Is the Latest Target of Advanced Credential Harvesting Attacks

A new attack runs slow and steady, focused on compromising large manufacturing companies using contextual social engineering to trick victims into giving up credentials.

Phishing is Still the Top Initial Access Vector

Phishing remains a top initial access vector for threat actors, according to researchers at ReliaQuest. Phishing and other social engineering tactics can bypass security technologies by ...

Threat Actors Increasingly Exploit Deepfakes for Social Engineering

The availability of deepfake technology has given threat actors a valuable tool for social engineering attacks, according to researchers at BlackBerry.

Organizations in the Middle East Targeted By Malware Impersonating Palo Alto GlobalProtect VPN

A social engineering campaign is targeting entities in the Middle East using malware that impersonates Palo Alto Networks’ GlobalProtect VPN, according to researchers at Trend Micro.

Major Scam Operation Uses Deepfake Videos

Researchers at Palo Alto Networks’ Unit 42 are tracking dozens of scam campaigns that are using deepfake videos to impersonate CEOs, news anchors, and high-profile government officials.