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

[Heads-up] FIRED: Two C-level Execs Who Fall Victim To A Massive 21 Million Dollar CEO Fraud

Nov 10, 2018 10:56:04 AM By Stu Sjouwerman

Two top-level executives of movie chain Pathé—the Managing Director and the CFO—were fired recently, after it became clear that they fell for a massive CEO Fraud attack that could have ...

More Untrustworthy Ransomware is Bad News for SMBs

Nov 9, 2018 5:20:29 PM By Stu Sjouwerman

The latest from UK insurer Beazley‘s Breach Response Services division shows an increase in ransomware from attackers with little ability to decrypt ransomed data.

[VIDEO] Brand New KnowBe4 "Behind The Scenes"

Nov 9, 2018 5:04:16 PM By Stu Sjouwerman

Here's some brand new footage about KnowBe4 and how things look behind the scenes ! October 2018, Our Series A Venture Capital investor Elephant Partners asked us if it was OK to shoot ...

"Inception Attackers" Mix Old Exploit, New Backdoor, and Spear Phishing

Nov 9, 2018 1:26:08 PM By Stu Sjouwerman

SecurityWeek reported about a Palo Alto Networks warning: "A malicious group known as the “Inception” attackers has been using a year-old Office exploit and a new backdoor in recent ...

Ransomware And RDP: A Dangerous Combination

Nov 8, 2018 4:50:04 PM By Stu Sjouwerman

A new variant of ransomware, CommonRansom, is asking for RDP access to the victim’s computer in order to decrypt files. CommonRansom is the latest attempt to extend the ransomware attack ...

Tweets from Elon Musk Still Aren't What They Seem

Nov 8, 2018 11:04:38 AM By Stu Sjouwerman

We've seen this before, and it's worth noting again. A tweet from a blue-checked Elon Musk is all it takes to set a Bitcoin giveaway frenzy into motion. The only problem is that it’s just ...

Having a Cybersecurity Culture Matters (and Pays)

Nov 7, 2018 10:51:08 AM By Stu Sjouwerman

According to ISACA and the CMMI Institute, organizations continue to invest heavily in security technology while neglecting security training to create the appropriate corporate culture.

Security is a Whole-of-Organization Responsibility

Nov 7, 2018 10:43:47 AM By Stu Sjouwerman

We've blogged about other recent studies of security. They're in substantial agreement. Here's one from Gemalto, and it reports that more than 4.5 billion digital records, each with an ...

KnowBe4 Announces Competitive Buyout to Combat Ineffective Phishing Training Tools

Nov 7, 2018 7:20:14 AM By Stu Sjouwerman

(Tampa Bay, FL) Nov 7, 2018 -- KnowBe4 is the world's largest new-school security awareness training company with over 21,000 customers. In an aggressive move, KnowBe4 announced a unique ...

Catphishing or Emotional Terrorism or Both: You Decide

Nov 7, 2018 7:01:41 AM By Stu Sjouwerman

A 65-year-old woman from North Carolina, Roxanne Reed, is in jail for allegedly plotting to kill her mother for the insurance money. Roxanne Reed had swallowed a catphishing scam, one in ...

CSO: Users Pose the Greatest Security Risk

Nov 6, 2018 9:45:56 AM By Stu Sjouwerman

The latest data from CSO’s 2018 U.S. State of Cybercrime report highlights the risk users create, and how little organizations are doing to address it.

CyberheistNews Vol 8 #44 Has Microsoft Office 365 Beat Phishing?

Nov 6, 2018 9:32:36 AM By Stu Sjouwerman

SEO Poisoning + Midterm Elections = Cybercriminals Paradise

Nov 5, 2018 9:59:11 AM By Stu Sjouwerman

Compromised websites focused on tomorrow’s midterm elections serve as the hunting ground for cybercriminals looking to take advantage of unsuspecting visitors.

Most Americans Can be Fooled by Fake Election Emails

Nov 5, 2018 6:50:07 AM By Stu Sjouwerman

The average American cannot reliably distinguish between fake and legitimate election campaign emails, according to a study by Valimail. In the weeks leading up to the US midterm ...

Scam Of The Week: Fortnite And League of Legends Phishing Attacks

Nov 3, 2018 2:54:14 PM By Stu Sjouwerman

This is an excellent opportunity to sit down with your young'uns and explain the risks of online scams.

Money Mules: How A Data Breach Turns Into Cash

Nov 3, 2018 11:13:53 AM By Stu Sjouwerman

Cybercriminals don’t want to be caught, so after a data breach, they use unsuspecting people as “mules” to launder money using a sophisticated shipping scam.

New Stuxnet Variant Allegedly Struck Iran

Nov 2, 2018 4:44:04 PM By Stu Sjouwerman

Our friends at Malwarebytes reported that a malware strain similar in nature to Stuxnet—but more aggressive and sophisticated—allegedly hit the infrastructure and strategic networks in ...

[On-Demand Webinar] The Pesky Password Problem: Battle of the Red and Blue Team featuring Kevin Mitnick

Nov 2, 2018 11:25:40 AM By Stu Sjouwerman

What really makes a “strong” password? And why are your end-users tortured with them in the first place? How do hackers crack your passwords with ease? And what can/should you do about ...

Successful Pretexting Attacks Have Nearly Tripled since 2017

Nov 1, 2018 4:02:39 PM By Stu Sjouwerman

Pretexting attacks are a growing threat to organizations, warn Chris Tappin and Simon Ezard from the Verizon Threat Research Advisory Centre. Verizon’s 2018 Digital Breach Investigation ...

Phishing Scam Is Targeting League of Legends Players

Nov 1, 2018 3:54:55 PM By Stu Sjouwerman

A phishing scam is using fake login pages to target League of Legends players, according to Avast Blog. At the moment, the attacks are taking place primarily in western Europe, mainly ...

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