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

Cyber Criminals use Domino Effect Chain Attacks to Leverage One Compromised Bank to Infect the Next

Mar 8, 2019 10:10:47 AM By Stu Sjouwerman

New details from international security company Group-IB show how cybercriminals are no longer looking to just steal from one bank. Instead they chain their attacks to improve their ...

60% of Organizations Have No CSO or CISO, Putting Network Security at Risk

Mar 8, 2019 10:04:19 AM By Stu Sjouwerman

Recent data from Check Point Security’s Cyber Talk shows organizations are massively unprepared for attacks on network, mobile, and physical security.

Rietspoof Malware Attack Uses Messaging Apps to Distribute Ransomware

Mar 8, 2019 7:16:33 AM By Stu Sjouwerman

Researchers at antivirus vendor Avast have identified a new malware attack that leverages Skype, Facebook Messenger, and other messaging applications.

Malware Blindness in the Enterprise

Mar 7, 2019 9:56:50 AM By Stu Sjouwerman

A growing percentage of cyberattacks are using encryption to avoid detection, according to a new report by Zscaler’s ThreatLabZ researchers. Their report, summarized by Help Net Security, ...

Ins and Outs of Impersonation...and Kidnapping

Mar 5, 2019 3:18:19 PM By Stu Sjouwerman

Impersonation attacks and business email compromise (aka CEO fraud) can lead to far more dangerous consequences than monetary losses, according to Matt Devost from OODA LLC. Devost ...

CyberheistNews Vol 9 #10 [Heads-Up] 40 Percent of Malicious URLs Found on Good Domains... YIKES!

Mar 5, 2019 9:37:20 AM By Stu Sjouwerman

KnowBe4 Technical Content Team Produces Tons Of Cool Stuff

Mar 5, 2019 9:00:00 AM By Stu Sjouwerman

I thought you might want to have an update on what kinds of content the KnowBe4's Technical Content team has been producing lately. (The picture here is Katie, our Technical Content ...

It Only Takes Minutes: Russians Go from Foothold to Privileged Access in Record Time

Mar 4, 2019 4:22:44 PM By Stu Sjouwerman

We think of data breaches as taking days or weeks. But with elevated access to move laterally around the network, a cybercriminal can accomplish much in just a matter of minutes.

FINRA Warns of New Phishing Attack Targeting Brokerage Firms

Mar 4, 2019 3:56:55 PM By Stu Sjouwerman

The latest warning from Financial Industry Regulatory Authority (FINRA) puts firms on notice of yet another tailored attack seeking to gain access to firms networks.

KnowBe4 Thrilled To Win Editor's Choice Anti-Phishing InfoSec Award 2019

Mar 4, 2019 11:59:00 AM By Stu Sjouwerman

“While nation-state exploitation, Cybercrime, Hacktivism, Cyber-espionage, Ransomware and malware exploits are all on the rise, KnowBe4 has won both the Editor's Choice Anti-Phishing ...

Fast-Changing Security Landscape May Render This Year's RSA Conference the "Most Human" Edition Ever

Mar 2, 2019 12:47:38 PM By Stu Sjouwerman

Tony Kontzer, a technology writer who blogs for the RSA 2019 conference observed: "While mind-blowing technological innovations are being demonstrated and perspective-shifting strategies ...

[Heads-up] 40 Percent Of Malicious URLs Found On Good Domains. YIKES!

Mar 2, 2019 11:28:15 AM By Stu Sjouwerman

Webroot revealed the results of their 2019 Threat Report, showing that tried-and-true attack methods are still going strong, but new threats emerge daily, and cybercrime is highly ...

New Evil USB Cable Shows How Attacks Can Leverage Physical Hardware

Mar 1, 2019 2:34:19 PM By Stu Sjouwerman

The latest security research project has led to a USB cable so malicious that it can be used for just about any kind of attack.

New Facebook Phishing Scam is So Good It Will Fool Even You

Mar 1, 2019 2:33:11 PM By Stu Sjouwerman

Scams seeking to harvest online credentials have long tried to replicate known logon pages. But this newly found instance is just about perfect.

KnowBe4 Fresh Content & Feature Updates - February 2019

Mar 1, 2019 10:52:55 AM By Stu Sjouwerman

NEW 'TARGETED TRAINING' FILTER IN MODSTORE You can now easily browse the industry and role based training content in the KnowBe4 ModStore.

KnowBe4 to Receive Significant Investment from KKR

Mar 1, 2019 7:08:34 AM By Stu Sjouwerman

I'm excited to announce we have a new investor that values us at more than $800 Million. We entered into an agreement to receive a sizable minority investment from leading global ...

Healthcare Continues to Prepare in the Face of Growing Cyber Attacks

Feb 28, 2019 1:07:39 PM By Stu Sjouwerman

According to the latest data in the 2019 HIMSS Cybersecurity Survey, the healthcare industry is keenly aware they are a target, and are taking steps to reduce the risk of successful ...

Organizations Need an Anti-Phishing Plan to Stop Cyberattacks

Feb 28, 2019 12:56:53 PM By Stu Sjouwerman

With the massive rise in phishing attacks, it is time for organizations to realize the concept of becoming a victim is an issue of when and no longer if.

[Scam Of The Week] Robocall scams surge to 85 billion globally

Feb 28, 2019 11:22:41 AM By Stu Sjouwerman

Robocall spam has surged to 85 billion calls globally with bank account, credit card and extortion being common scams, according to Hiya, a company that makes apps to fend off unwanted ...

Discovered: A Whole New Strain Of Voice Phishing Attacks

Feb 28, 2019 11:07:32 AM By Stu Sjouwerman

What if social engineers, instead of calling victims with voice phishing attacks, intercepted phone calls their victims make to legitimate phone numbers? Malicious apps let cybercriminals ...

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