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

It is in times of crisis you will be tested

Many organizations are dusting off their crisis management documents this week. Many a contingency plan will see its first-ever run. As the C-19 is spreading fast around the world, more ...

Coronavirus-Themed Simulated Phishing Templates

The following templates were added to the console this morning:

Malicious IQY Files Found in Spam Campaign

Researchers at Lastline have come across a phishing campaign that’s using Internet Query (IQY) files to bypass security filters and deliver a new version of the Paradise ransomware. The ...

Extreme Measures: The Epidemic of COVID-19 Phishing Emails Rages On

Since the publication of our first two blog pieces documenting the flood of Coronavirus-themed emails (see HERE and HERE), customers using the Phish Alert Button (PAB) have continued to ...

Hackers Use Interactive Malicious COVID-19 Map to Spread Malware

Cybercriminals constantly latch on to news items that captivate the public’s attention, but usually they do so by sensationalizing the topic or spreading misinformation about it. ...

U.S. Homeland Security: "Malicious Actors Expected To Focus Attacks On Teleworkers. Secure Your VPN"

The Department of Homeland Security's cybersecurity agency this week shared tips on how to properly secure enterprise virtual private networks (VPNs) seeing that a lot of organizations ...

Keeping our employees and partners safe during #coronavirus

Our top priority remains the health and safety of our Knowsters, and we also have a responsibility to support partners and the local community in all the countries we operate.

FBI: Ransomware Attacks Have Cost Victims over $140 Million With Ryuk Leading the Way

New details presented at RSA 2020 outline which ransomware variants are the highest paid over the last 6 years and what was their share of the millions paid in ransom.

U.K. Pensions Regulator Sees 145 Percent Increase in Malicious Email Activity

The U.K. Government’s massive jump in email-based cyberattacks far outpaces even the most aggressive phishing or spam growth numbers seen this year.

[Heads Up] Your Exfiltrated Ransomware Data Is Now Used To Spearphish Your Business Partners

Ransomware operators are continually improving their tactics to ensure more lucrative payouts, according to Information Security Media Group (ISMG). Over the past several years, attackers ...