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

Cisco Calls Out Organizations As Being “Overconfident and Unprepared” for Cyber Attacks

Apr 16, 2024 1:38:31 PM By Stu Sjouwerman

In a new report, Cisco says the cyber readiness of organizations is lacking despite having experienced multiple cyber attacks within the last year.

CyberheistNews Vol 14 #16 Critical Improvements to the 7 Most Common Pieces of Cybersecurity Advice

Apr 16, 2024 9:00:00 AM By Stu Sjouwerman

KnowBe4 Named a Leader in the Spring 2024 G2 Grid Report for Security Awareness Training

Apr 16, 2024 8:00:00 AM By Stu Sjouwerman

We are thrilled to announce that KnowBe4 has been named a leader in the latest G2 Grid Report that compares security awareness training (SAT) vendors based on user reviews, customer ...

[WARNING] FBI Issues Alert on Major Phishing Campaign That Impersonates US Toll Services

Apr 15, 2024 3:57:18 PM By Stu Sjouwerman

The FBI has issued an alert warning of a widespread SMS phishing (smishing) campaign targeting people in several US states with phony notices of unpaid tolls, BleepingComputer reports.

I don't have to say it, do I?

Apr 13, 2024 7:07:09 PM By Stu Sjouwerman

So today, news broke that Iran has sent dozens, if not more than 100 drones to Israel in a direct attack. Discussion on Twitter also claim that ballistic missiles will be sent.

[Heads Up] Global Cybercrime Hotspot Countries Revealed: Secure Your Defenses

Apr 13, 2024 10:25:18 AM By Stu Sjouwerman

In a groundbreaking study that spanned three years, an international research team, including experts from the University of Oxford and UNSW Canberra, has developed the first-ever World ...

State-Sponsored Disinformation Campaigns Targeting Africa Driving Instability And Violence

Apr 12, 2024 1:46:34 PM By Stu Sjouwerman

A shocking report shows how email-based disinformation campaigns can have material real-world impacts to the citizens in the targeted countries.

U.S. Department of Health Alert: Hackers are Targeting IT Help Desks at Healthcare Organizations

Apr 12, 2024 1:46:29 PM By Stu Sjouwerman

A new sector alert published by the U.S. Department of Health and Human Services outlines new attacks in which social engineering is used to obtain credentials for online fraud.

Cyber Attacks Could Cause Global Bank Runs

Apr 12, 2024 8:48:12 AM By Stu Sjouwerman

The International Monetary Fund (IMF) has warned that severe cyber attacks against financial institutions could lead to major bank runs and market selloffs. While this hasn’t happened ...

Yesterday, in DC, I was given the Holland on the Hill Freddy Heineken Award

Apr 11, 2024 2:35:58 PM By Stu Sjouwerman

The Holland on the Hill Freddy Heineken Award honors an entrepreneur who has made a substantial and positive contribution to the US-Dutch economic relationship, exemplifying the best of ...

Water Facilities Compromised By Iranian Threat Actors

Apr 11, 2024 8:19:04 AM By Stu Sjouwerman

In December 2023, a joint alert was issued by the FBI, CISA, NSA, EPA, and INCD regarding Iranian cyber actors known as "CyberAv3ngers" linked to Iran's Islamic Revolutionary Guard Corps ...

Top Tax Scams of 2024 Your Organization Should Watch Out For

Apr 11, 2024 8:19:01 AM By Stu Sjouwerman

As the April 15, 2024 filing deadline approaches, tax scammers are working overtime to take advantage of rushed or stressed taxpayers.

Malvertising Campaigns Surged in 2023

Apr 11, 2024 8:18:57 AM By Stu Sjouwerman

Researchers at BlueVoyant observed a 50% increase in large-scale malvertising campaigns in 2023 compared to 2022.

New Phishing-as-a-Service (PhaaS) platform, 'Tycoon 2FA', Targets Microsoft 365 and Gmail Accounts

Apr 9, 2024 2:05:22 PM By Stu Sjouwerman

A new PhaaS service brings the power of bypassing multi-factor authentication (MFA) to the world’s most-used email platforms.

CyberheistNews Vol 14 #15 [Heads Up] Your Apple Users Are Now Targeted With New MFA Attacks

Apr 9, 2024 9:00:00 AM By Stu Sjouwerman

All The Ways the Internet is Surveilling You

Apr 9, 2024 8:00:00 AM By Stu Sjouwerman

Your personal information is continuously harvested and analyzed by countless data brokers eager to sell to the highest bidder. From your name to your online activities, to your ...

Australian Government Commits to Become a World-Leader in Cybersecurity by 2030

Apr 8, 2024 12:05:22 PM By Stu Sjouwerman

The Australian Government has leveraged insight from cybersecurity experts to create a new six-part plan to combat cybersecurity over the coming decade.

Tokyo Police Department Warns of Phishing Scam That Uses Phony Arrest Warrants

Apr 8, 2024 12:05:19 PM By Stu Sjouwerman

The Tokyo Metropolitan Police Department has warned of a phishing scam that’s attempting to trick individuals with phony arrest warrants, the Japan Times reports.

Large-Scale StrelaStealer Campaign Impacts Over 100 Organizations Within the E.U. and U.S.

Apr 8, 2024 7:55:54 AM By Stu Sjouwerman

A new campaign of StrelaStealer attacks identified by security analysts at Unit42 has been spotted targeting E.U. and U.S. organizations. This somewhat new infostealer has evolved to be ...

Catfishing Campaign Targets Members of the UK Government

Apr 4, 2024 1:28:49 PM By Stu Sjouwerman

At least twelve men working in the UK parliament have recently been targeted by WhatsApp spear phishing messages, POLITICO reports. The targeted individuals include “a senior Labour MP, ...

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