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

Hybrid Vishing Attacks Increase 625% in Q2

Aug 18, 2022 8:16:42 AM By Stu Sjouwerman

Reaching a six-quarter high in Q2, hybrid vishing attacks have increased six times that of the hybrid-vishing attacks experienced in Q1 2021.

Organizations Holding Cyber Insurance Policies May Get Stuck with the Bill in a Phishing Loss

Aug 18, 2022 8:16:28 AM By Stu Sjouwerman

Plenty of new anecdotal and legal case-based stories are demonstrating that just because your organization has a policy doesn’t mean it’s actually going to pay out after an attack.

Social Engineering for Espionage and Influence

Aug 17, 2022 9:20:19 AM By Stu Sjouwerman

Microsoft has disrupted operations carried out by a Russian government-aligned threat actor tracked as “SEABORGIUM.” The threat actor uses phishing and credential harvesting to conduct ...

Children of Conti go Phishing

Aug 16, 2022 11:57:46 AM By Stu Sjouwerman

Researchers at AdvIntel warn that three more ransomware groups have begun using the BazarCall spear phishing technique invented by the Ryuk gang (a threat group that subsequently ...

CyberheistNews Vol 12 #33 [Eye Opener] Recent Cisco Hack by Ransomware Group Started Because of a Phishing Attack

Aug 16, 2022 9:34:25 AM By Stu Sjouwerman

Initial Access Broker Phishing

Aug 15, 2022 9:07:30 AM By Stu Sjouwerman

Cisco has disclosed a security incident that occurred as a result of sophisticated voice phishing attacks that targeted employees, according to researchers at Cisco Talos. The researchers ...

U.S. Government Warns of Increased Texting Scams as Mobile Attacks are Up 100%

Aug 12, 2022 8:47:48 AM By Stu Sjouwerman

Cyberattacks via SMS messaging are on the rise, and are having such an impact, the Federal Communications Commission has released an advisory on Robotext phishing attacks (or smishing).

Massive Network of Over 10,000 Fake Investment Sites Targets Europe

Aug 12, 2022 8:47:44 AM By Stu Sjouwerman

Using a mix of compromised social media accounts, social engineering, call center agents, and some convincing websites, this latest scam seeks to get victims to repeatedly “invest”.

Phishing-as-a-Service Platform “Robin Banks” Helps Cybercriminals Target Customers of Financial Institutions

Aug 11, 2022 9:29:14 AM By Stu Sjouwerman

Initial Access Brokers (IABs) are one of the new breeds of cybercrime services. But this newest PhaaS platform makes it easy for anyone to target banks for as little as $50 monthly.

92% of Organizations Have Experienced a Security Incident as a Result of an Email-Borne Threat

Aug 11, 2022 9:29:08 AM By Stu Sjouwerman

New data shows that not only are email-borne threats increasing, but that current integrated cloud email security solutions do little to detect and stop advanced email-based threats.

New Paypal Phishing Scam Uses “Legitimate” Invoices to Reach Victim Inboxes

Aug 11, 2022 9:29:02 AM By Stu Sjouwerman

Newer phishing scams are looking for ways to make legitimate websites do the work of delivering malicious messages to unsuspecting victims – this new scam achieves it perfectly.

SolidBit Ransomware Targets League of Legends Players

Aug 11, 2022 9:28:56 AM By Stu Sjouwerman

Researchers at Trend Micro warn that a SolidBit ransomware variant is being distributed via fraudulent software targeting video game players and social media users. The malware is being ...

Recent Cisco Hack by Ransomware Group Started Because of a Phishing Attack

Aug 11, 2022 8:59:06 AM By Stu Sjouwerman

In a recent article by Forbes, Cisco confirmed that they were hacked by a ransomware group as the group of cybercriminals published a partial list of files that were claimed to be ...

The Top 8 Most Common Types of DNS Records

Aug 10, 2022 9:46:07 AM By Stu Sjouwerman

This article is a good technical overview of DNS that can help you prevent spoofing. This is a cross-post from the EasyDMARC blog, a new KnowBe4 Ventures portfolio company.

DPRK Operators Impersonate CoinBase

Aug 10, 2022 8:44:55 AM By Stu Sjouwerman

North Korea’s Lazarus Group is running a new phishing campaign targeting Coinbase accounts, BleepingComputer reports. The threat actors are posing as Coinbase and targeting people with ...

New Phishing Campaign is Now Targeting Coinbase Users

Aug 9, 2022 2:31:06 PM By Stu Sjouwerman

If you're a Coinbase user, you are most likely the next target of a new phishing campaign. Cybercriminals have managed to infiltrate two-factor authentication and deploying other social ...

Hacking the Hacker: Assessing and Addressing Your Organization’s Cyber Defense Weaknesses

Aug 9, 2022 11:07:28 AM By Stu Sjouwerman

Cybercriminals are out there, watching and waiting for the perfect opportunity. They are gathering information about your organization and users, devising the perfect plan to infiltrate ...

Cash App Scams Strikes Again With New Types of Attacks

Aug 9, 2022 9:31:42 AM By Stu Sjouwerman

TradeArabia has published a report about common scams on CashApp, explaining that scammers frequently take advantage of CashApp promotions, like the weekly money giveaway, “Super Cash App ...

CyberheistNews Vol 12 #32 [Heads Up] Watch Out For This Widespread, Multistage Investment Scam

Aug 9, 2022 9:27:25 AM By Stu Sjouwerman

New Research Shows Social Engineering and Phishing are the Top Threats

Aug 9, 2022 8:56:10 AM By Stu Sjouwerman

According to the CS Hub Mid-Year Market Report 2022, new findings shows that 75% of survey respondents believe that social engineering and phishing attacks are the top threat vector to ...

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