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

Australian Financial Services Company is Sued for Repeatedly Being Hacked… and Doing Zero About It

Aug 27, 2020 2:12:10 PM By Stu Sjouwerman

The Australian Securities and Investments Commission (ASIC) is suing RI Advice Group for being hacked multiple times over a year’s time that includes 155 hours of undetected hacker ...

One-Fifth of Organizations Have Experienced a Security Breach Due to Their Remote Workforce

Aug 27, 2020 2:07:40 PM By Stu Sjouwerman

Having a remote workforce has been keeping organizations running, but new data puts a spotlight on the realities of what preparations were taken and whether organizations are truly secure.

New Lazarus Spearphishing Attack on Crypto Organizations Uses a LinkedIn Job Posting as its Front

Aug 27, 2020 2:03:45 PM By Stu Sjouwerman

What better way to gain complete control over a crypto organization’s network that to target their sysadmin with a Job Posting and then spear phish them?

Tesla and the FBI just prevented a $1 million ransomware hack at the Nevada Gigafactory

Aug 27, 2020 10:01:34 AM By Stu Sjouwerman

Fred Lambert at Electrek just reported on a story we published Aug 26th, and he reveals who was targeted: "Tesla and the FBI worked together to prevent a group of ransomware hackers from ...

The Bureau Explains How Tech Support Scams Work

Aug 27, 2020 8:51:03 AM By Stu Sjouwerman

Tech support scams function like organized businesses and consist of various criminals fulfilling different roles, according to court documents obtained by ZDNet. The documents contain ...

Russian Charged With Trying to Recruit Employee to Plant Ransomware in US Company

Aug 26, 2020 4:03:17 PM By Stu Sjouwerman

Michael Kan at PC Mag reported: "According to the FBI, Egor Igorevich Kriuchkov promised to pay as much as $1 million to the employee to help his shadowy group steal data from a ...

Recent Phishing Scam Sends Uncertain Employment and Bogus Layoff Notices

Aug 26, 2020 8:29:00 AM By Stu Sjouwerman

Scammers have been exploiting people’s fears by posing as HR employees and sending emails informing recipients that they’ve been laid off, according to Kaspersky’s spam and phishing ...

What happens when you type in a URL in an address bar in a browser?

Aug 25, 2020 11:20:38 AM By Stu Sjouwerman

I saw this post on twitter with a fun and educational infographic that shows it's quite a complicated affair where lots of things can go wrong. Here is the infographic, and if you click ...

Watch Out! Cybersecurity and Infrastructure Security Agency Warn of New VBA Attack Designed to Deploy KONNI Remote Administration Tool

Aug 25, 2020 10:42:10 AM By Stu Sjouwerman

A new alert from CISA outlines just how dangerous and intrusive the KONNI malware is in organizations that fall for phishing attacks using Word attachments with malicious VBA code.

[Heads Up] Weaponized Disinformation Campaigns Skyrocket; KnowBe4 Releases New Spot & Stop DisInfo Training Module

Aug 25, 2020 10:40:29 AM By Stu Sjouwerman

Disinformation is a potent weapon in the current cold cyberwar arsenal. DisInfo attacks are skyrocketing and the number of countries using organized social media manipulation is going up ...

New Vishing Attacks Pretend to Be Internal IT to Scam Users from Financial Firms Out of Their Credentials

Aug 25, 2020 10:34:04 AM By Stu Sjouwerman

Dozens of banks, cryptocurrency exchanges, and web hosting firms have experienced vishing attacks aimed at eventually stealing cryptocurrency from high net-worth customers.

CyberheistNews Vol 10 #35 [Heads Up] Watch Out for OAuth Phishing Attacks and How You Can Stay Safe

Aug 25, 2020 9:39:49 AM By Stu Sjouwerman

[HEADS UP] There's No Beta for Cyberpunk 2077

Aug 25, 2020 8:26:54 AM By Stu Sjouwerman

Scammers are sending phishing emails purporting to offer beta access to the highly anticipated video game Cyberpunk 2077, Eurogamer reports. These scams have been occurring for at least a ...

Phishing Summit - Mitigation, Forensics and Eye-opening Phishing Research

Aug 25, 2020 7:00:00 AM By Stu Sjouwerman

Looks like things are getting crazier by the month, right? The recent Twitter attack shows that all organizations are susceptible to social engineering attacks. Unfortunately, very few ...

Conversations with a Phisher

Aug 24, 2020 8:20:51 AM By Stu Sjouwerman

Phishing campaigns display varying levels of sophistication depending on how much time and effort the attackers are willing to invest in a particular target, according to Steven Murdoch, ...

[Heads Up] DarkSide: Sophisticated New Customized Ransomware Strain Demands Millions Of Dollars

Aug 23, 2020 9:07:16 AM By Stu Sjouwerman

Breaking News: A new ransomware operation named DarkSide began attacking organizations earlier this month with customized attacks that have already earned them million-dollar payouts. But ...

Ukrainian Gang Responsible for Laundering More Than $42 Million Arrested as Part of Operation “Bulletproof Exchanger”

Aug 20, 2020 5:30:11 PM By Stu Sjouwerman

A group of cybercriminals responsible for helping ransomware gangs convert their cryptocurrency into cash were arrested in June, according to new details released this week.

New Vishing Scam Targets Diners at London’s Prestigious Ritz Hotel

Aug 20, 2020 5:23:47 PM By Stu Sjouwerman

Aimed at stealing credit card details from restaurant patrons, this new scam feels like it’s something we’re going to hear about a lot more.

The Most Effective Attacks Are Often the Simplest

Aug 20, 2020 8:26:53 AM By Stu Sjouwerman

The recent Twitter hack shows that devastating security breaches don’t always involve sophisticated actors or methods, according to Rachel Tobac, CEO of SocialProof Security. On the ...

Your Vishing Attack Surface Has Exploded And Voice Phishers Now Target Your Corporate VPN

Aug 19, 2020 10:34:50 AM By Stu Sjouwerman

Brian Krebs wrote: "The COVID-19 epidemic has brought a wave of email phishing attacks that try to trick work-at-home employees into giving away credentials needed to remotely access ...

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