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

Impersonation Phishing Attacks Increase as Credentials Take the Lead as the Primary Target

New data shows an upswell of email-based cyberattacks, with over 256 brands being impersonated, as social media, Microsoft, shipping, and ecommerce brands top the list.

Hybrid Vishing Attacks Increase 625% in Q2

Reaching a six-quarter high in Q2, hybrid vishing attacks have increased six times that of the hybrid-vishing attacks experienced in Q1 2021.

Organizations Holding Cyber Insurance Policies May Get Stuck with the Bill in a Phishing Loss

Plenty of new anecdotal and legal case-based stories are demonstrating that just because your organization has a policy doesn’t mean it’s actually going to pay out after an attack.

Social Engineering for Espionage and Influence

Microsoft has disrupted operations carried out by a Russian government-aligned threat actor tracked as “SEABORGIUM.” The threat actor uses phishing and credential harvesting to conduct ...

Children of Conti go Phishing

Researchers at AdvIntel warn that three more ransomware groups have begun using the BazarCall spear phishing technique invented by the Ryuk gang (a threat group that subsequently ...

Initial Access Broker Phishing

Cisco has disclosed a security incident that occurred as a result of sophisticated voice phishing attacks that targeted employees, according to researchers at Cisco Talos. The researchers ...

U.S. Government Warns of Increased Texting Scams as Mobile Attacks are Up 100%

Cyberattacks via SMS messaging are on the rise, and are having such an impact, the Federal Communications Commission has released an advisory on Robotext phishing attacks (or smishing).

Massive Network of Over 10,000 Fake Investment Sites Targets Europe

Using a mix of compromised social media accounts, social engineering, call center agents, and some convincing websites, this latest scam seeks to get victims to repeatedly “invest”.

Phishing-as-a-Service Platform “Robin Banks” Helps Cybercriminals Target Customers of Financial Institutions

Initial Access Brokers (IABs) are one of the new breeds of cybercrime services. But this newest PhaaS platform makes it easy for anyone to target banks for as little as $50 monthly.