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

I Was Interviewed On TV Thursday

Jul 9, 2012 9:15:48 AM By Stu Sjouwerman

[caption id="" align="aligncenter" width="500" caption="Stu TV Interview"][/caption] Cyber threats reported by U.S. energy companies, public water districts and other infrastructure ...

Released! Kevin Mitnick Security Awareness Training

Jul 9, 2012 6:28:17 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="460" caption="Released! Kevin Mitnick Security Awareness Training"][/caption] I am super excited to officially announce we have released the new ...

Court Ruling Could Be Boon to Cyberheist Victims

Jul 6, 2012 4:09:16 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="310" caption="Court Ruling Boon To Cyberheist Victims"][/caption] BrianKrebs reported some very good news. A decision handed down by a federal ...

Cybercriminals Sniff Out Vulnerable Firms

Jul 6, 2012 2:41:06 AM By Stu Sjouwerman

[caption id="" align="aligncenter" width="560" caption="Small Firms Cyberheist Victims"][/caption] I could have written this headline myself. But I didn't, it was Sarah Needleman at the ...

Cisco Cloud Calamity

Jul 5, 2012 9:11:43 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="350" caption="Cisco Cloud Calamity"][/caption] Cisco's Linksys marketing division got themselves soaking wet. Customers that own the Linksys E2700, ...

Training Fragmentation Causes Knowledge Gap

Jul 4, 2012 5:06:48 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="350" caption="Training Fragmentation"][/caption] More and more, you see training companies promote their security awareness training products as ...

FBI: High-tech Espionage Costs 13 Billlion

Jul 2, 2012 8:41:24 AM By Stu Sjouwerman

Michael Cooney over at NetworkWorld came up with a number: 13. "Driven by the general ease of stealing electronically stored data and the reality of growing global businesses, US ...

Scam Of The Week Payroll Phish

Jul 1, 2012 3:52:40 AM By Stu Sjouwerman

The nakedsecurity blog over at Sophos highlighted a new phishing scam that would be good to alert your employees about. The bad guys are pretending to be payroll processing company ADP. ...

Malware Metastasizes

Jul 1, 2012 3:13:16 AM By Stu Sjouwerman

A few days ago I wrote about a 60 million Euro cyberheist. I have been digging into this a bit more, as it's the most advanced attack yet. Cybercrime is not revolutionary, it clearly ...

KnowBe4 Philosophy

Jun 30, 2012 4:58:45 AM By Stu Sjouwerman

[caption id="" align="alignright" width="250" caption="KnowBe4 Philosophy"][/caption] We are happy to go against the grain. Were not a massive developer that turns out bloatware year ...

Bank Settles With California Cyberheist Victim

Jun 26, 2012 8:20:32 AM By Stu Sjouwerman

Finally, a positive outcome in a cyberheist lawsuit. Brian Krebs reported that a Professional Business Bank settled with a Village View Escrow Inc, a California cyberheist victim. A ...

60 Million Euro Stolen In Biggest Cyberheist Ever

Jun 26, 2012 8:09:14 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="390" caption="60 million Cyberheist"][/caption] This is exactly what I have been warning against in my book cyberheist. McAfee and Guardian ...

Need to protect a critical machine? Use Whitelisting, not Antivirus

Jun 24, 2012 9:46:28 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="290" caption="2002 Good vs. Bad"][/caption] And now a mainstream antivirus vendor is saying this too. First of all, I have no dog in this fight, ...

Why pill pushing spam pays off

Jun 22, 2012 3:15:37 AM By Stu Sjouwerman

Brian Krebs is on a roll. Here is why pill pushing spam pays off. "Consumer demand for cheap prescription drugs sold through spam-advertised Web sites shows no sign of abating, according ...

OMG - I did not know it was THIS horrible.

Jun 21, 2012 10:46:08 AM By Stu Sjouwerman

More from Brian Krebs's astounding blog post today. "As the chart I compiled above indicates, attackers are switching the lure or spoofed brand quite often, but popular choices include ...

A Closer Look: Email-Based Ransomware Attacks

Jun 21, 2012 9:31:59 AM By Stu Sjouwerman

With the increase of email phishing attacks being the primary attack vector, ransomware payments have risen to 60%, it's important to take a closer look at email-based ransomware attacks.

Kevin Mitnick Security Awareness Training Success Stories

Jun 21, 2012 7:07:00 AM By Stu Sjouwerman

Powerful New System Admin Tool: InstantRevert

Jun 21, 2012 5:13:24 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="370" caption="InstantRevert, a powerful new system admin tool"][/caption] KnowBe4 has released a powerful new system admin tool: InstantRevert. ...

Message From Kevin Mitnick

Jun 21, 2012 3:52:03 AM By Stu Sjouwerman

Kevin sent the folowing letter to 1,442 people that over the last 3 years filled out the his contact us form on the www.mitnicksecurity.com website. Of these, 1082 were delivered. Now, ...

15 social media scams

Jun 21, 2012 3:06:01 AM By Stu Sjouwerman

From Facebook phishing lures to Twitter and Tumblr hoaxes, here are 15 scams to watch out for on social networking sites. CSO online took the time to put this slide show together and it's ...

Security Awareness Training Blog

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