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

Fake Emails Purporting to be from UK Energy Regulator

Sep 27, 2022 9:00:35 AM By Stu Sjouwerman

A phishing campaign is impersonating UK energy regulator Ofgem, according to Action Fraud, the UK’s cybercrime reporting centre.

Recent Optus Data Breach Teaches the Importance of Recognizing Social Engineering

Sep 26, 2022 10:00:46 AM By Stu Sjouwerman

Optus, one of Australia's largest telecommunications companies, recently suffered a data breach that affected over 9.8 million customers.

Sentence in a Catphishing Case

Sep 26, 2022 9:59:32 AM By Stu Sjouwerman

A convict serving twenty-five years in South Carolina for voluntary manslaughter and attempted armed robbery, Darnell Kahn, has now also been convicted in a US court on Federal sextortion ...

You Need Aggressive Cyber Training, Not "So, So" Training

Sep 26, 2022 8:00:00 AM By Stu Sjouwerman

According to nearly every study conducted over the last decade, social engineering is involved in the vast majority of cyber attacks. The figures range from about 30% to 90% of all ...

Retail is in Trouble: 77% Of Retail Organizations Have Been Hit by Ransomware

Sep 23, 2022 1:58:17 PM By Stu Sjouwerman

With Retail seeing and feeling the impact of more ransomware attacks than nearly every other industry, a new report focuses in on what the repercussions look like for this sector… and ...

“Browser-in-the-Browser” Phishing Technique Spotted in New Steam Account Attack

Sep 23, 2022 1:58:10 PM By Stu Sjouwerman

Luring victims using a realistic- and legitimate-looking fake browser window to steal Steam accounts, this new type of social engineering may be a sign of things to come.

Phishing Campaign Targets GitHub Users

Sep 23, 2022 9:15:50 AM By Stu Sjouwerman

GitHub has issued an alert warning of a phishing campaign targeting users by impersonating the popular DevOps tool CircleCI, BleepingComputer reports. The phishing emails inform users ...

Security Practices Are Improving, But Cybercriminals Are Keeping Up

Sep 21, 2022 2:48:10 PM By Stu Sjouwerman

A survey by the Spanish GetApp software rating site has found that the number of organizations using phishing simulations has risen from 30% in 2019 to 70% in 2022. Despite this positive ...

Phishing Attacks Reach an All-Time High, Quadrupling That of Early 2020

Sep 21, 2022 10:20:31 AM By Stu Sjouwerman

New quarterly data from the Anti-Phishing Working Group shows unprecedented phishing activity with increases in BEC, use of social media, vishing, and smishing.

CyberheistNews Vol 12 #38 [HEADS UP] New Uber Security Breach 'Looks Bad', Caused by Social Engineering

Sep 20, 2022 9:30:00 AM By Stu Sjouwerman

Social Engineering Targets Healthcare Payment Processors

Sep 19, 2022 8:57:39 AM By Stu Sjouwerman

The US Federal Bureau of Investigation (FBI) has issued an alert warning of an increase in phishing and other social engineering attacks against healthcare payment processors.

[HEADS UP] Bank of America Warns About Recent Scams That Request Zelle Payment Due to 'Suspicious Activity'

Sep 16, 2022 3:17:35 PM By Stu Sjouwerman

Bank of America recently sent a customer service email warning users to watch out for this new phishing attack.

Uber security breach 'looks bad', caused by social engineering

Sep 16, 2022 8:36:02 AM By Stu Sjouwerman

It was all over the news, but ZDNet's Eileen Yu was one of the first. -- "Hacker is believed to have breached Uber's entire network in a social engineering attack, which one security ...

Phishing from a French Government Career Website

Sep 15, 2022 10:30:54 AM By Stu Sjouwerman

Attackers are exploiting a legitimate French government website to send phishing messages, according to researchers at Vade. The website, Pôle Emploi, is a career site for companies ...

[MSP News] Manage Your Multiple KnowBe4 Accounts Faster with Managed Training and Phishing Rolled Into One

Sep 15, 2022 8:00:00 AM By Stu Sjouwerman

You wanted the ability to manage both phishing and training campaigns across multiple KnowBe4 accounts, and we listened!

Cisco Attempt Attributed to Lapsus$ Group

Sep 14, 2022 12:40:18 PM By Stu Sjouwerman

Security researchers at Cisco Talos have issued an update on the cyberattack Cisco sustained earlier this year. The attack began with a phishing attack against a Cisco employee, which led ...

[HEADS UP] The Online Scams exploiting Queen Elizabeth's Death are Here

Sep 13, 2022 4:34:58 PM By Stu Sjouwerman

The Sun just reported that experts are sending a warning about online scams in relation to Queen Elizabeth's passing.

Scammer Continues Phishing From Prison

Sep 13, 2022 10:46:52 AM By Stu Sjouwerman

Dutch authorities have announced that an imprisoned scammer was running a phishing operation from his jail cell, Cybernews reports. The crook used four mobile phones to post malicious ads ...

CyberheistNews Vol 12 #37 [Eye Opener] The New Evil Proxy Phishing-as-a-Service Platform Beats MFA

Sep 13, 2022 9:30:00 AM By Stu Sjouwerman

Ransomware Gangs Improve Attack Speed and Evade Detection with New "Intermittent Encryption" Tactic

Sep 13, 2022 7:27:27 AM By Stu Sjouwerman

As ransomware gangs look for new ways to improve their execution, this relatively new encryption tactic has been gaining popularity in multiple ransomware families.

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