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

2021 Prediction: Expect Ransomware Attacks Will Increase in Frequency and Variety

Nov 23, 2020 4:27:29 PM By Stu Sjouwerman

A new forward-looking report from security vendor FireEye Mandiant predicts the greatest single cyber threat today is only going to become a greater menace next year.

Email Sandboxes Are Detected and Rendered Useless in New Office 365 Phishing Attack

Nov 23, 2020 4:25:45 PM By Stu Sjouwerman

A new threat tactic is being used to determine if sandbox environments are being used to gain more information about a potential phishing attack, allowing the bad guys to avoid detection.

Ransomware Downtime Costs for SMBs Are 50 Times More than the Ransom Itself!

Nov 23, 2020 4:23:03 PM By Stu Sjouwerman

No one has less cash on hand to spend on dealing with a cyberattack than the small business. New data shows ransomware is a challenge for SMBs and they aren’t prepared for the costs.

Famous U.K. Soccer Club Becomes the Next Victim of a Cyber Attack

Nov 23, 2020 8:59:28 AM By Stu Sjouwerman

The famous UK soccer club Manchester United recently became the next victim of a cyber attack. The club stated that the personal data from fans have not been stolen.

You're Fired (Not Really, Just Clicked on a Phishing Email)

Nov 23, 2020 8:33:59 AM By Stu Sjouwerman

The operators of the BazarLoader malware are using phishing emails that inform people they’ve been terminated from their jobs, according to Linn Freedman, a partner at Robinson & Cole ...

[Scam of the Week] Black Friday & Cyber Monday Top 10 Cybersecurity Tips

Nov 23, 2020 7:00:00 AM By Stu Sjouwerman

The bad guys are at it again with holiday phishing scams, and this time from the comfort of your user's home. Because we are in the middle of a pandemic, retailers have already started ...

OPSEC, OPSEC, OPSEC...

Nov 21, 2020 10:17:11 AM By Stu Sjouwerman

The BBC reported: "A Dutch journalist managed to gatecrash a confidential video conference of EU defense ministers. Daniel Verlaan of RTL Nieuws joined the meeting after the Dutch defence ...

[ModStore Release] New 2021 Versions of 3 Flagship Courses Now Live!

Nov 20, 2020 11:20:01 AM By Stu Sjouwerman

Our Courseware team has been hard at work, and we're proud to announce the release of the 2021 Versions of 3 Flagship Courses!

Remote Workers Continue to Put Organizations Critically at Risk of Cyberattack

Nov 20, 2020 11:15:57 AM By Stu Sjouwerman

The Insecurity of the remote worker, their devices, personal networks, and bad cybersecurity habits create a massive threat surface for cybercriminals to easily take advantage of.

One-Third of Employees Say Their Company Has No Cybersecurity Measures in Place While Working from Home

Nov 20, 2020 11:15:49 AM By Stu Sjouwerman

At a time when organizations should be implementing additional security measure to ensure the logical perimeter of their network is protected, new research shows companies aren’t prepared.

Phishing Attacks Rose by 220% At Pandemic Peak Amid Global COVID-Related Fears

Nov 20, 2020 11:15:41 AM By Stu Sjouwerman

At a time when the last thing we need is more phishing attacks, new data shows that cybercriminals have been stepping up their game, taking full advantage of the pandemic.

Google's Free Services and Phishing Campaigns: A Likely Pair

Nov 19, 2020 11:32:17 AM By Stu Sjouwerman

Cybercriminals are now launching phishing campaigns that abuse Google's free productivity tools while also using social engineering to trick you into installing malware.

Spotting Retail Scams During the Holiday Season

Nov 19, 2020 8:22:08 AM By Stu Sjouwerman

People need to be particularly vigilant for scams as we approach the holiday shopping season, according to Laura Brooks at Tessian. Scammers always take advantage of seasonal trends, and ...

[HEADS UP] Allowing Site Notifications Can be Very Costly

Nov 18, 2020 9:25:10 AM By Stu Sjouwerman

Krebs on Security reported that there have been an increasing number of websites asking visitors to approve 'notifications'. In most cases these notifications are not malicious, but ...

Nearly Half of Spear Phishing Emails Bypass Security Filters

Nov 18, 2020 8:29:30 AM By Stu Sjouwerman

47% of payloadless phishing emails are able to bypass the most popular secure email gateways (SEGs), according to researchers at IronScales. These are emails that don’t contain malicious ...

CyberheistNews Vol 10 #47 [SCARY EYE OPENER] The Bad Guys Can Now Bypass Your Filters and Implant Malicious Emails Straight Into Your Inbox

Nov 17, 2020 9:25:08 AM By Stu Sjouwerman

Security Awareness Training Blog

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Stu Sjouwerman

Books

Recent Posts

2021 Prediction: Expect Ransomware Attacks Will Increase in Frequency and Variety

Email Sandboxes Are Detected and Rendered Useless in New Office 365 Phishing Attack

Ransomware Downtime Costs for SMBs Are 50 Times More than the Ransom Itself!

Famous U.K. Soccer Club Becomes the Next Victim of a Cyber Attack

You're Fired (Not Really, Just Clicked on a Phishing Email)

[Scam of the Week] Black Friday & Cyber Monday Top 10 Cybersecurity Tips

OPSEC, OPSEC, OPSEC...

[ModStore Release] New 2021 Versions of 3 Flagship Courses Now Live!

Remote Workers Continue to Put Organizations Critically at Risk of Cyberattack

One-Third of Employees Say Their Company Has No Cybersecurity Measures in Place While Working from Home

Phishing Attacks Rose by 220% At Pandemic Peak Amid Global COVID-Related Fears

Google's Free Services and Phishing Campaigns: A Likely Pair

Spotting Retail Scams During the Holiday Season

[HEADS UP] Allowing Site Notifications Can be Very Costly

Nearly Half of Spear Phishing Emails Bypass Security Filters

CyberheistNews Vol 10 #47 [SCARY EYE OPENER] The Bad Guys Can Now Bypass Your Filters and Implant Malicious Emails Straight Into Your Inbox

Why Use Malware When Cybercriminals Can Use Social Engineering?

KnowBe4 is Named Cybersecurity Company of the Decade

[HEADS UP] Ransomware Gangs Partner to Extort Victims

Phishing in Facebook's Pond

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