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Security Awareness Training Blog

Keeping You Informed. Keeping You Aware.
Stay on top of the latest in security including social engineering, ransomware and phishing attacks.

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Stu Sjouwerman

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

Find all of Stu's books on Amazon

Recent Posts

Coinbase’s QR Code Superbowl Ad Only Helps Normalize QR-Based Scams

Feb 17, 2022 10:08:51 AM By Stu Sjouwerman
Use of QR codes is becoming a mainstream part of advertising, but also is getting the attention of scammers intent on redirecting you to a malicious site they control.
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Scammers Use a Mix of Stolen Credentials, Inbox Rules, and a Rogue Outlook Client Install to Phish Internal and External Victims

Feb 17, 2022 10:08:48 AM By Stu Sjouwerman
Organizations that are not using Microsoft’s multi-factor authentication are finding themselves victims of credential attacks that involve threat actors installing Outlook on a controlled ...
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Phishing Attacks on Social Media Doubled Over 2021

Feb 16, 2022 8:38:03 AM By Stu Sjouwerman
Phishing attacks on social media doubled over the course of 2021, according to a new report from PhishLabs by HelpSystems. Most (68%) of these attacks targeted organizations in the ...
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CyberheistNews Vol 12 #07 [Heads Up] FBI Warns Against New Criminal QR Code Scams

Feb 15, 2022 9:24:51 AM By Stu Sjouwerman
[Heads Up] FBI Warns Against New Criminal QR Code Scams Email not displaying? | View Knowbe4 Blog CyberheistNews Vol 12 #07 | Feb. 15th., 2022 [Heads Up] FBI Warns Against New Criminal QR ...
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[On-Demand Webinar] Incredible Email Hacks You'd Never Expect and How You Can Stop Them

Feb 14, 2022 3:58:14 PM By Stu Sjouwerman
If you think the only way your network and devices can be compromised via email is phishing, think again!
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Meta Files Lawsuit Over Phishing Attacks

Feb 14, 2022 8:54:05 AM By Stu Sjouwerman
Meta (Facebook’s corporate parent) and the digital banking company Chime have filed a joint lawsuit against two Nigerian citizens for allegedly impersonating Chime in phishing attacks, ...
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FBI: Scammers Exploit Job Posting Sites with Fake Jobs to Steal Money and Personal Information

Feb 11, 2022 8:53:08 AM By Stu Sjouwerman
In the wake of the great reset, cybercriminals are finding success posing as legitimate companies in job postings seeking new hires on well-known job sites.
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New Cyberattack Campaign Delivers Multiple RATs via Trusted Cloud Services

Feb 11, 2022 8:52:41 AM By Stu Sjouwerman
Abusing cloud providers including Microsoft Azure and AWS, cybercriminals are setting up malicious infrastructure to hide their operations and avoid detection.
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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 ...
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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 ...
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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 - ...
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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.
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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 ...
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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 ...
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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.
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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 ...
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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 ...
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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.
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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.
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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 ...
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