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

Phishing Attacks Skyrocket 1200 Percent

May 18, 2011 4:02:13 AM By Stu Sjouwerman

[caption id="attachment_912" align="alignleft" width="300" caption="cybercrime skyrockets"][/caption] According to a recently released Microsoft Security Intelligence Report, phishing ...

U.S. Government Escalating Efforts to Fight Cybercrime

May 16, 2011 3:05:37 AM By Stu Sjouwerman

[caption id="attachment_903" align="alignleft" width="300" caption="U.S. Government"][/caption] If you were under the impression that all is well with your network security and that ...

Cybercrime On The Internet

May 13, 2011 3:50:52 PM By Stu Sjouwerman

BayNews 9 in Tampa Bay, Florida interviewed Margie Manning of Tampa Bay Business Journal about cybercrime on the internet and she features KnowBe4 and our Phishing Security Test! Check it ...

Common Sense Guidelines to Avoid a Cyberheist

May 11, 2011 3:02:36 AM By Stu Sjouwerman

[caption id="attachment_884" align="alignleft" width="300" caption="cyberheists"] [/caption] Social engineering, called phishing, happens all the time. Phishing leads to cybercrimes of ...

An Important Message about Cybercrime to All Organizations

May 9, 2011 4:37:38 AM By Stu Sjouwerman

[caption id="attachment_876" align="alignleft" width="300" caption="Social Engineering"][/caption] With the advent of social media websites like Skype, Facebook and Twitter, business ...

Cybercrime: Cyber Security Public Awareness Act of 2011 Introduced in US Senate

May 5, 2011 9:09:57 AM By Stu Sjouwerman

It was great to read that the "Cyber Security Public Awareness Act of 2011" was recently introduced in the US Senate. The purpose of the bill is to raise the public's security awareness, ...

Cybercriminals Abuse Free Domain Registration to Launch Phishing Attacks

May 3, 2011 3:31:46 AM By Stu Sjouwerman

A phishing survey released by the Anti-Phishing Working Group (APWG) in April 2011 indicates a record number of unique domain names were used for phishing attacks in the second half of ...

$20 Million Stolen in Cyberheists from SMEs, Money Sent to China

Apr 29, 2011 8:59:58 AM By Stu Sjouwerman

The FBI reported this week that between March 2010 and April 2011, cyberthieves drained approximately $20 million from the accounts of US-based small to medium enterprises (SMEs) via ...

77 Million Network Accounts for Sony PlayStation Compromised by Daring Cybercrime

Apr 27, 2011 8:59:15 AM By Stu Sjouwerman

This morning the news is ablaze with reports of a hack into Sony's PlayStation Network, with numerous media outlets proclaiming that as many as 77 million customer accounts have been ...

Inside the "Phishing Mindset" That Drives Cybercrime

Apr 25, 2011 8:55:16 AM By Stu Sjouwerman

I just read a fascinating interview with security maven Tim Rohrbaugh, VP for Information Security at Intersections Inc. Intersections is a provider of branded and customized identity ...

The Cyberheist Book Has Arrived!

Apr 22, 2011 8:19:41 AM By Stu Sjouwerman

[caption id="attachment_754" align="alignleft" width="240" caption="Cyberheist"] [/caption] Cyberheist the book has arrived! The Kindle edition is currently selling on Amazon for ...

Conde Nast Caught in $8 Million Spear-Phishing Scam

Apr 21, 2011 7:54:14 AM By Stu Sjouwerman

[caption id="attachment_747" align="alignleft" width="225" caption="cybercrime site"][/caption] I wanted to bring to your attention another major cyberheist scheme that is making news. It ...

Understanding ISAT (Internet Security Awareness Training)

Apr 18, 2011 8:56:34 AM By Stu Sjouwerman

ISAT is pronounced "Eye sat", and stands for Internet Security Awareness Training. It's our bread and butter here at KnowBe4.com, so it's something we like to communicate about regularly, ...

Symantec "Trends for 2010" Report Emphasizes Increased Mobile Cybercrime Threats

Apr 15, 2011 7:42:25 AM By Stu Sjouwerman

Every April, Symantec publishes its Internet Security Threat Report for the preceding year. This month, the company released the latest item in that series entitled " Symantec Internet ...

Smartphone Users at Greatest Risk for Phishing

Apr 13, 2011 9:08:50 AM By Stu Sjouwerman

In the wake of the recent Epsilon e-mail hack, I came across a CNN article " Mobile users more vulnerable to e-mail phishing scams." In that story the reporter, Amy Gahran, asserts the ...

Do Your PCs Come With "For Rent" Signs for Cyberthieves?

Apr 11, 2011 10:48:49 AM By Stu Sjouwerman

Brian Krebs is a former reporter on the information security beat for The Washington Post who now runs his own Website KrebsOnSecurity.com in Northern Virginia. IN a recent (4/8/2011) ...

Check Out These Top 10 Small Business Anti-Cybercrime Tools

Apr 8, 2011 6:29:46 AM By Stu Sjouwerman

Internet.com is a respected information technology publication that's been active on the Web since the late 1990s. Their spin-off Website SmallBusinessComputing.com is a great source for ...

Three Quarters of All SMB Banking Cybercrime Happens Online

Apr 6, 2011 7:07:06 AM By Stu Sjouwerman

A recent study entitled "The 2011 Business Banking Trust Study" reports that three of every four small and midsized businesses that experienced banking fraud in the previous year incurred ...

Millions of Consumer/Customer E-mail Addresses Stolen; Phishing Surely to Follow

Apr 4, 2011 4:05:36 AM By Stu Sjouwerman

Epsilon is one of the world's largest customer outreach e-mail companies, and generates legitimate traffic on behalf of a number of very large companies (see Table 1 below). Epsilon ...

Cybercrime: Bank of America Joins Trusteer Ranks

Apr 1, 2011 7:18:27 AM By Stu Sjouwerman

Look what just showed up in my colleague's e-mail inbox this morning: I wrote in moderate detail about Trusteer in a blog post right here entitled " Cyberheist Snippet 4: More on Trusteer ...

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