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

UK National Lottery hacked: Watch Out For Phishing Attacks On Millions Of Customers

Mar 20, 2018 4:20:33 PM By Stu Sjouwerman

The UK National Lottery has warned more than 10 million players with online accounts to change their passwords due to a security breach, The Telegraph reported.

How To: Social Engineering A Whole Country During An Election

Mar 20, 2018 2:27:09 PM By Stu Sjouwerman

Check out this fascinating 13 min interview with Christopher Wylie, a former research director at Cambridge Analytica, who had a copy of a dataset with 50 million Facebook profiles. He ...

Five things to know about Russian cyber attacks on the energy grid

Mar 19, 2018 2:21:59 PM By Stu Sjouwerman

Morgan Chalfant at The Hill wrote: "Trump administration officials on Thursday accused the Russian government of staging a multi-year cyberattack campaign against the energy grid and ...

Zenis Ransomware Encrypts Your Data & Deletes Your Backups

Mar 19, 2018 10:23:02 AM By Stu Sjouwerman

Larry Abrams at Bleepingcomputer warned against a new strain called Zenis Ransomware, which was discovered this week by the MalwareHunterTeam "While it is currently not quite clear yet ...

CyberheistNews Vol 8 #12 A Cyber Attack in Saudi Arabia Had a Deadly Goal - Experts Fear Another Try

Mar 19, 2018 9:47:00 AM By Stu Sjouwerman

Putin Wins Election: Six More Years Of Criminal Cyber Attacks On The West

Mar 19, 2018 7:33:22 AM By Stu Sjouwerman

Russian President Vladimir Putin won re-election by a wide margin Sunday, strengthening his hand amid an escalating confrontation with the West. Having been 18 years in power, Putin has ...

A Cyber Attack in Saudi Arabia Had a Deadly Goal. Experts Fear Another Try:

Mar 17, 2018 12:52:16 PM By Stu Sjouwerman

Last summer, a petrochemical plant in Saudi Arabia was the target of a cyber attack that investigators believe was designed to sabotage the plant's operations and cause an explosion. Iran ...

Did You Know About The KnowBe4 YouTube Channel? Please Subscribe.

Mar 17, 2018 11:49:04 AM By Stu Sjouwerman

We frequently post awareness videos and other useful public service announcements on our YouTube Channel. We have general videos about the company, news overage, customer testimonials, ...

It’s The Year 2018, And Even Ransomware Is Agile

Mar 17, 2018 11:36:57 AM By Stu Sjouwerman

The malware developers started by publishing the least well-built malware that could possibly work, and improved it as they went along. Given this, and given that this newest version was ...

Microsoft: "Phishing still number one method for cyber-attacks"

Mar 16, 2018 11:15:38 AM By Stu Sjouwerman

Redmond states the obvious: "Hackers are going for the low-hanging fruit." Microsoft has just released their Security Intelligence Report (SIR), its annual cybersecurity summary, and it ...

It's official: Russia is targeting critical American infrastructure with 'malicious cyber attacks'

Mar 16, 2018 7:30:40 AM By Stu Sjouwerman

TNW just wrote: "Russian cyber operatives are attacking critical American infrastructure such as energy grids, nuclear facilities, aviation systems, and water processing plants, according ...

Scam Of The Week: Phishing Madness!

Mar 15, 2018 4:09:47 PM By Stu Sjouwerman

Beware of March Madness, criminal hackers are at it again, after Valentine's Day their phishing agenda has moved to the next topic. They are now spoofing popular March Madness websites, ...

CyberheistNews Vol 8 #11 [ALERT] "A Really Difficult Phishing Scenario That's Very Hard To Beat"

Mar 13, 2018 9:50:28 AM By Stu Sjouwerman

Phishing Is Culprit Behind Vast Majority of Data Exfiltration, Intelligence Official Says

Mar 10, 2018 4:20:22 PM By Stu Sjouwerman

Phil Goldstein at FedTech magazine had some concerning news. "A top federal counterintelligence official says agencies must do more to harden their cybersecurity defenses, even if that ...

FTC Study: Millennials Are The Biggest Victims Of Social Engineering

Mar 10, 2018 11:23:45 AM By Stu Sjouwerman

A report from the FTC found that 40% of adults age 20-29 lost money to fraud, while only 18% of adults over the age of 70 did so, challenging the narrative of older adults falling victim ...

Half of Ransomware Victims Recovered Their Data After Paying the Ransom Demand

Mar 9, 2018 7:13:17 AM By Stu Sjouwerman

A massive survey of nearly 1,200 IT security practitioners and decision makers across 17 countries reveals that half the people who fell victim to ransomware infections last year were ...

More Security Awareness Training Market Perspectives

Mar 8, 2018 12:53:13 PM By Stu Sjouwerman

By Perry Carpenter, KnowBe4 Chief Evangelist and Strategy Officer A few weeks ago, I wrote about my thoughts regarding recent market moves by Microsoft, Wombat, PhishLine, and others. A ...

[ALERT] A Really Difficult Phishing Scenario That's Very Hard To Beat

Mar 7, 2018 7:08:21 AM By Stu Sjouwerman

I was alerted by a customer about a really difficult scenario that’s becoming all the more frequent. While there’s probably little that can be done in terms of tuning your spam filters ...

Email Security Vulnerability Affects Half of the Internet's Servers

Mar 6, 2018 5:45:27 PM By Stu Sjouwerman

Our friends at Bleepingcomputer wrote: "A critical vulnerability affects hundreds of thousands of email servers. A fix has been released but this flaw affects more than half of the ...

Phishing Via Social Media Up 100 Percent

Mar 6, 2018 2:25:03 PM By Stu Sjouwerman

Fabian Libeau at InformationSecurityBuzz wrote: "The most interesting trend to surface in Q4 of RiskIQ’s phishing report was a 100 percent increase in phishing campaigns leveraging social ...

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