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

Massive Phishing Attack On Businesses with Evil New Ransomware Strain

Nov 25, 2017 11:02:08 AM By Stu Sjouwerman

The Scarab ransomware strain is updated again and spreads via Necurs botnet in a massive 12.5 million campaign, mostly targeting .com domains. Scarab was spotted June 2017 for the first ...

Spam was nearly dead, then it became an essential tool for crime and came roaring back

Nov 25, 2017 7:59:50 AM By Stu Sjouwerman

John Christian at TheOutline wrote a post that made me take notice because it neatly summarized the current state of affairs and confirms our own experience: spam has morphed and is back ...

URGENT - If IT and Marketing are not freaking out about GDPR compliance, you are not paying attention

Nov 24, 2017 3:04:00 PM By Stu Sjouwerman

I found an article about GDPR compliance written by the fine folks of HubSpot, which we use ourselves here at KnowBe4 use for marketing automation. We have customers in Europe, so our ...

Uber Total Loss: 57 Million Records Stolen But Data Breach Was Hidden For A Year

Nov 22, 2017 7:37:46 AM By Stu Sjouwerman

Oh boy. Uber is known for pushing the limits of the law and has dozens of lawsuits pending against it, but this one went too far and now comes the reckoning. Bloomberg was first to report ...

[ALERT] Zombie Remote Access Phishing Trojan Kills Antivirus

Nov 20, 2017 10:00:00 AM By Stu Sjouwerman

Almost two years ago we took note of two different write-ups on the Adwind (aka AlienSpy) remote access trojan (RAT), one by McAfee and the other by Fidelis Security. Those pieces caught ...

CyberheistNews Vol 7 #45 [HEADS-UP] Skeleton in the Closet: 17-Year Old MS Office Flaw Allows Malware Install When User Opens File

Nov 20, 2017 9:59:43 AM By Stu Sjouwerman

We're Still Not Ready for GDPR? What is Wrong With Us?

Nov 19, 2017 10:30:08 AM By Stu Sjouwerman

Sara Peters, Senior Editor at Darkreading wrote an excellent article about GDPR. It is both reprimanding and encouraging to get off our collective butts and do something about GDPR very ...

‘Grey’s Anatomy’ Fall Finale Cliffhanger: Hospital Shut Down By Ransomware Attack

Nov 19, 2017 8:24:01 AM By Stu Sjouwerman

Ransomware goes prime time: TV Show Grey's Anatomy characters Bailey and Arizona are unable to access medical records on the computer and an I.T. specialist named Tim notes that cardiac ...

The future of cyberwar: Weaponised ransomware, IoT attacks and a new arms race

Nov 18, 2017 11:03:15 AM By Stu Sjouwerman

Steve Ranger at TechRepublic did a good job summarizing the direction of future threats we are going to have to deal with. "After at least a dozen years in the shadows, cyberwarfare is ...

Ransomware recovery methods: What does the NIST suggest?

Nov 18, 2017 8:37:09 AM By Stu Sjouwerman

Knowing what ransomware recovery methods are available is important as the threat continues to grow. Expert Judith Myerson at TechTarget outlines what the NIST recommends for enterprises. ...

Antivirus Software Doing The Complete Opposite And Spreading Malware

Nov 17, 2017 2:01:47 PM By Stu Sjouwerman

Nicknamed AVGater by Austria-based security consultant Florian Bogner, he discovered an exploit within Antivirus software that takes advantage of the “restore from quarantine” function ...

Skeleton in the closet: 17-year old MS office flaw allows malware install when user opens file

Nov 15, 2017 11:18:35 AM By Stu Sjouwerman

Here is a new pain in the neck! Fix this one ASAP. While the world is still dealing with the threat of 'unpatched' Microsoft Office's built-in DDE feature, researchers have uncovered a ...

[On-Demand Webinar] Six Cybersecurity Trends Organizations Need to Watch for in 2018

Nov 14, 2017 8:54:25 AM By Stu Sjouwerman

Watch this insider’s perspective of cybersecurity trends to expect in 2018 from our founder Stu Sjouwerman. The list of six predictions are founded on KnowBe4’s deep insight into threats ...

Watch Out For Black Newsjacking: FOSCAM camera poisoned search results

Nov 14, 2017 6:42:56 AM By Stu Sjouwerman

Security researchers frequently report on vulnerable IoT devices. Cisco's Talos group just reported that Foscam video cams have a security risk. We did a Google search on Foscam Indoor ...

Scam of the Week: "Cyber Monday Is Scammer Heaven"

Nov 13, 2017 5:18:21 PM By Stu Sjouwerman

The majority of consumers aware of online phishing scams, but still may fall victim this cyber Monday... So here is your Scam Of The Week! DomainTools, a leader in domain name and ...

CyberheistNews Vol 7 #45 [ALERT] This Scary New Phishing Attack Is Very Hard to Detect

Nov 13, 2017 10:28:20 AM By Stu Sjouwerman

[VIDEO] New Smart Groups Put Your Phishing, Training And Reporting On Autopilot.

Nov 11, 2017 9:29:21 AM By Stu Sjouwerman

Automate the path your employees take to smarter security decisions. With the powerful new Smart Groups feature, you can use each employees’ behavior and user attributes to tailor ...

[ALERT] This Scary New Phishing Attack Is Very Hard To Detect

Nov 11, 2017 7:57:49 AM By Stu Sjouwerman

You need to know about a new phishing attack vector reported by our friends at Barkly. It utilizes a new technique that's just plain nasty. This week, users at one of their customers ...

Google: Our hunt for hackers reveals phishing is far deadlier than data breaches

Nov 10, 2017 11:47:25 AM By Stu Sjouwerman

The study finds that victims of phishing are 400 times more likely to have their account hijacked than a random Google user, a figure that falls to 10 times for victims of a data breach. ...

Spy Vs. Spy? WikiLeaks Says CIA Impersonated Kaspersky Lab

Nov 9, 2017 5:15:23 PM By Stu Sjouwerman

Wow, the plot thickens. Attribution indeed is a very murky business. According to WikiLeaks, its analysis revealed that by using these fake certificates, the CIA made it look like data ...

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