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

Great Budget Ammo: 60 minutes Warns Against Ransomware

We could not have said it better ourselves, but now 60 minutes has done the work for us. This is probably the best ammo you can send to your non-tech executives to explain the ransomware ...

Nearly Half of US Orgs Not Ready for California Consumer Privacy Act Deadline

InfoSec Mag observed something a bit worrisome. "In advance of the California Consumer Privacy Act (CCPA) going into effect January 1, 2020, researchers analyzed how prepared US ...

IT and Executives are (Mostly) in Alignment and Both Fear the Phish

According to the latest from AT&T Cybersecurity, enterprise IT and boardrooms largely see eye-to-eye… and those eyes are watching some very common, yet pervasive, threats.

U.K. Court Finds Employee Actions Constitute “Vicarious Liability”, despite meeting GDPR Requirements

The latest developments in the lawsuit against UK supermarket chain Morrisons may dictate the future of employers being held responsible for employee actions.

[Heads-up] Scary New MegaCortex Ransomware Strain Discovered That Targets Your Business Network

Sophos has discovered a scary new strain of very sophisticated ransomware called MegaCortex. It was purpose-built to target corporate networks, and once penetrated, the attackers infect ...

61% Of IT Pros Have Experienced A Serious Data Breach And Many Are Blamed For It.

TechRepublic just reported that cybercriminals continue to target intellectual property, putting companies at risk for financial and brand reputation hits, quoting a new McAfee report.

New Phishing Campaign From 'FBI Director Wray' is Hysterical

Our friend Larry Abrams who runs the bleepingcomputer site had something highly entertaining: "We regularly write about phishing emails at BleepingComputer.com in order to warn our ...

Social Media Phishing Attacks Up More Than 70 Percent

Social media phishing, primarily on Facebook and Instagram, has seen a 74.7 percent increase in the first quarter of 2019. A new report on the current phishing landscape from predictive ...

How Your Users Can Fall Victim To Credential Stuffing Attacks

Credential stuffing attacks are extremely easy to carry out and offer a massive return on investment, according to a new report by researchers at Recorded Future. These attacks utilize ...

[InfoGraphic] AUGH! Your Users Are Clicking On 50% Of The LinkedIn Phishing Tests

KnowBe4 Q1 2019 top-clicked phishing subject lines reveals LinkedIn messages to be most popular. Today, we revealed that simulated phishing tests that include “LinkedIn” in the subject ...