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

Scam of the Week: "Cyber Monday Is Scammer Heaven"

Nov 13, 2017 5:18:21 PM By Stu Sjouwerman

The majority of consumers aware of online phishing scams, but still may fall victim this cyber Monday... So here is your Scam Of The Week! DomainTools, a leader in domain name and ...

CyberheistNews Vol 7 #45 [ALERT] This Scary New Phishing Attack Is Very Hard to Detect

Nov 13, 2017 10:28:20 AM By Stu Sjouwerman

[VIDEO] New Smart Groups Put Your Phishing, Training And Reporting On Autopilot.

Nov 11, 2017 9:29:21 AM By Stu Sjouwerman

Automate the path your employees take to smarter security decisions. With the powerful new Smart Groups feature, you can use each employees’ behavior and user attributes to tailor ...

[ALERT] This Scary New Phishing Attack Is Very Hard To Detect

Nov 11, 2017 7:57:49 AM By Stu Sjouwerman

You need to know about a new phishing attack vector reported by our friends at Barkly. It utilizes a new technique that's just plain nasty. This week, users at one of their customers ...

Google: Our hunt for hackers reveals phishing is far deadlier than data breaches

Nov 10, 2017 11:47:25 AM By Stu Sjouwerman

The study finds that victims of phishing are 400 times more likely to have their account hijacked than a random Google user, a figure that falls to 10 times for victims of a data breach. ...

Spy Vs. Spy? WikiLeaks Says CIA Impersonated Kaspersky Lab

Nov 9, 2017 5:15:23 PM By Stu Sjouwerman

Wow, the plot thickens. Attribution indeed is a very murky business. According to WikiLeaks, its analysis revealed that by using these fake certificates, the CIA made it look like data ...

Ordinypt Ransomware Intentionally Destroys Files, Currently Targeting Germany

Nov 9, 2017 3:46:59 PM By Stu Sjouwerman

A new ransomware strain called Ordinypt is currently targeting victims in Germany, but instead of encrypting users' documents, the ransomware rewrites files with random data. Discovered ...

NATO to Increase Cyber Weaponry to Combat Russia

Nov 9, 2017 11:43:40 AM By Stu Sjouwerman

NATO members agreed Wednesday to increase the use of cyber weaponry and tactics during military operations, with the alliance also upgrading other capabilities to combat a resurgent ...

[On-Demand Webinar] Phishing and Social Engineering in 2018

Nov 9, 2017 10:37:48 AM By Stu Sjouwerman

Ransomware has tipped the 1 billion mark and damages are expected to be around 5 billion before the year is out. Use of ransomware has evolved throughout the year with a 600% rise in URL ...

KnowBe4 Ranked Number 70 Fastest Growing Company in North America on Deloitte’s 2017 Technology Fast 500™

Nov 9, 2017 9:44:51 AM By Stu Sjouwerman

KnowBe4 today got word that we ranked No. 70 on Deloitte’s Technology Fast 500™, a ranking of the 500 fastest growing technology, media, telecommunications, life sciences and energy tech ...

Scam Of The Week: Massive Netflix Phishing Campaign

Nov 7, 2017 10:58:58 AM By Stu Sjouwerman

There is a massive scam campaign going on, this time a very well executed Netflix phishing attack. The scam targets subscribers telling them that their account is about to be canceled. ...

Bad Rabbit Ransomware Attack Was Hiding A Spear Phishing Campaign

Nov 6, 2017 10:00:00 AM By Stu Sjouwerman

During the attacks in eastern Europe with the Bad Rabbit ransomware, a more insidious attack was taking place in Ukraine under its cover, Reuters reported. Serhiy Demedyuk, head of the ...

CyberheistNews Vol 7 #43 EU to Declare Cyber-Attacks “Act of War” - USA Likely to Follow

Nov 6, 2017 9:45:02 AM By Stu Sjouwerman

Dark Overlord hackers reveal plans to leak 'Hollywood database stolen from top studio'

Nov 5, 2017 9:37:22 AM By Stu Sjouwerman

Criminal hacking group The Dark Overlord is threatening to leak the internal client data of top Hollywood production studio Line 204, IBTimes UK has learned. The seemingly international ...

How to sell cybersecurity to your executive team

Nov 5, 2017 9:15:23 AM By Stu Sjouwerman

Scott Schlimmer wrote a great post at CSO about the constant battle between profitable business investments and “unprofitable” security investments to protect the current bottom-line.

Security Awareness Training Is a Team Effort

Nov 5, 2017 8:47:27 AM By Stu Sjouwerman

A security awareness program is a critical part of any security strategy. It is not enough to simply hold everyone in the organization accountable. Chief information security officers ...

Thirty Percent of CEO Email Passwords Compromised in Breaches: Study

Nov 5, 2017 8:00:38 AM By Stu Sjouwerman

SecurityWeek reported about an interesting F-Secure study showing thirty percent of CEOs from the world's largest organizations have had their company email address and password stolen ...

Shame and confusion lead to employees paying ransoms out of pocket

Nov 4, 2017 11:20:50 AM By Stu Sjouwerman

Doug Olenick at SC Media reported on something quite surprising. This is the first time we've heard about this! Whether out of shame for being victimized or confusion over what to do more ...

2018 Is Likely To Be A Worse Year For Ransomware Than 2017

Nov 4, 2017 10:49:29 AM By Stu Sjouwerman

Sophos released their 2018 malware forecast this week. Their predictions would make any IT Pro concerned, a PDF of their report is here. Read on for your executive summary. Ransomware ...

On Average, How Many Passwords do Employees Manage?

Nov 3, 2017 10:59:16 AM By Stu Sjouwerman

According to the Last Pass Password Exposé report, an employee manages of about 200 passwords. Other industry reports often estimate the number of credentials used and put the figure ...

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