Stu Sjouwerman

Chief Executive Officer & President

Stu Sjouwerman (pronounced “shower-man”) is the founder and CEO 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.

Books

Cyberheist E-Book

Find all of Stu's books on Amazon

Brand Impersonation and the Healthcare Sector

Feb 10, 2022 8:44:51 AM By Stu Sjouwerman

The healthcare sector is particularly vulnerable to phishing attacks, according to Mike Azzara at Mimecast. Employees in the healthcare industry need to be wary of brand impersonation ...

Updated Ransomware Hostage Rescue Manual

Feb 9, 2022 10:00:56 AM By Stu Sjouwerman

Ransomware is one of the most damaging types of cyber attacks of all time, and the one feared the most by business owners and cybersecurity defenders. This worry is not without reason. In ...

Use of Excel .XLL Add-Ins Soars Nearly 600% to Infect Systems in Phishing Attacks

Feb 8, 2022 6:25:28 PM By Stu Sjouwerman

Cybercriminals are taking to more advanced functionality than traditional VBA scripting to both execute complex malicious actions via Excel and to obfuscate their true intention - ...

Average Ransomware Ransoms Jump 130% While Use of Data Exfiltration Grows

Feb 8, 2022 6:25:24 PM By Stu Sjouwerman

With pressures by law enforcement on ransomware gangs in 2021, and more stringent security requirements by cyber insurers, cybercriminals are changing their tactics to ensure a payoff.

Scammers Now Exploit 'Slinks' in LinkedIn

Feb 8, 2022 9:53:21 AM By Stu Sjouwerman

Scammers are exploiting LinkedIn redirect links, or “Slinks,” to fool users and bypass email security filters, Brian Krebs reports. These links allow companies to track their marketing ...

CyberheistNews Vol 12 #06 [Heads Up] Beware of New Quickbooks Payment Scams

Feb 8, 2022 9:23:51 AM By Stu Sjouwerman

[Heads Up] Beware of New QuickBooks Payment Scams Email not displaying? | View Knowbe4 Blog CyberheistNews Vol 12 #06 | Feb. 8th., 2022 [Heads Up] Beware of New QuickBooks Payment Scams ...

As Tax Season Starts, So Do IRS Scams - Here’s What to Look For

Feb 7, 2022 9:55:24 AM By Stu Sjouwerman

It’s that time again, when we all dread finding out if we owe money or not. And cybercriminals are banking on it with a wide range of scams that all impersonate the IRS.

KnowBe4 Named a Leader in the Winter 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

Feb 4, 2022 1:28:02 PM By Stu Sjouwerman

We are excited to announce that KnowBe4 has been named a leader in the Winter 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the PhishER platform for ...

Phone Number Only Phishing on the Rise

Feb 4, 2022 8:59:55 AM By Stu Sjouwerman

I do not have the data to support my conclusion, but myself and others have noticed the sharp increase in email phishing attempts that include only a phishing message and a phone number ...

U.K. Snack Manufacturer Expects Months of Delays After Ransomware Attack

Feb 3, 2022 3:15:47 PM By Stu Sjouwerman

Orders of top-selling snack brands from KP Snacks are on hold in the aftermath of a Conti ransomware attack that includes data theft of confidential information.

Your KnowBe4 Fresh Content Updates from January 2022

Feb 3, 2022 9:14:53 AM By Stu Sjouwerman

Check out the 20 new pieces of training content added in January, alongside the always fresh content update highlights and new features.

Web Trackers Collect Much More Info About Your Users’ Browsing Activity Than Previously Believed

Feb 3, 2022 8:27:29 AM By Stu Sjouwerman

Researchers at Norton LifeLock have found that web trackers are collecting much more information about users’ browsing activity than had previously been believed. Such trackers can follow ...

[New Feature] Give Your Users Additional Learning Opportunities Driven By AI with New AI-Recommended Optional Learning Feature

Feb 3, 2022 8:00:00 AM By Stu Sjouwerman

We are excited to announce that the power of AI has been brought to the KnowBe4 Optional Learning feature to offer users suggestions for additional training opportunities.

Security Awareness Training Blog

View Topics

Stu Sjouwerman

Books

Recent Posts

Brand Impersonation and the Healthcare Sector

Updated Ransomware Hostage Rescue Manual

Use of Excel .XLL Add-Ins Soars Nearly 600% to Infect Systems in Phishing Attacks

Average Ransomware Ransoms Jump 130% While Use of Data Exfiltration Grows

Scammers Now Exploit 'Slinks' in LinkedIn

CyberheistNews Vol 12 #06 [Heads Up] Beware of New Quickbooks Payment Scams

As Tax Season Starts, So Do IRS Scams - Here’s What to Look For

KnowBe4 Named a Leader in the Winter 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

Phone Number Only Phishing on the Rise

U.K. Snack Manufacturer Expects Months of Delays After Ransomware Attack

Your KnowBe4 Fresh Content Updates from January 2022

Web Trackers Collect Much More Info About Your Users’ Browsing Activity Than Previously Believed

[New Feature] Give Your Users Additional Learning Opportunities Driven By AI with New AI-Recommended Optional Learning Feature

1 in 7 Ransomware Extortion Leaks Include Sensitive Operational Technology Details

Opinion: Is Your Cyber Insurance Going To Cover “Cyber War”?

KnowBe4 Unveils Official Trailer for ‘The Inside Man’ Season 4

COVID-19 Test-Related Phishing Scams Jump 521% Into January

8 New Malware Payloads Spotted As Part of Attacks Against Ukrainian Targets

New Phishing Campaign is Impersonating Zoom to Steal Credentials

CyberheistNews Vol 12 #05 [Heads Up] DHS Sounds Alarm on New Russian Destructive Disk Wiper Attack Potential

Search Our Blog

Subscribe To Our Blog

Posts By Topic

Get the latest about social engineering

Subscribe to CyberheistNews

Get the latest about social engineering

Subscribe to CyberheistNews