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

Ransomware Attacks Are Not Slowing Down

Oct 11, 2018 12:14:04 PM By Stu Sjouwerman

Annual ransomware-induced costs are projected to exceed $11.5 billion by 2019, according to Veeam. Defined by the Department of Justice as “a new model of cybercrime with a potential to ...

Organizations Need to Prepare for the Aftermath of Phishing Attacks

Oct 11, 2018 12:06:01 PM By Stu Sjouwerman

Phishing campaigns are growing more sophisticated as industries become increasingly aware of the threat they pose. Some of these attacks are so clever and meticulously crafted that many ...

Add Wi-Fi Proximity to Your Cyberattack Concern List

Oct 10, 2018 2:18:35 PM By Stu Sjouwerman

The latest attack from the Russian GRU involves both traditional spear phishing and close access attacks in an attempt to thwart an investigation of the nerve agent attack in the UK.

CyberheistNews Vol 8 #40 [Heads-Up] Instant LinkedIn Hit: "Kevin Mitnick Demos the USB Ninja Cable Attack"

Oct 9, 2018 9:38:37 AM By Stu Sjouwerman

Users Sharing Passwords Put Organizations at Higher Risk

Oct 9, 2018 9:21:23 AM By Stu Sjouwerman

Cybercriminals thrive on misuse of credentials, and users sharing them only makes the criminal’s job easier. The latest report from LastPass shows password sharing is rampant.

Don’t Be Scammed Twice: Check Your Cyber Insurance!

Oct 8, 2018 4:28:47 PM By Stu Sjouwerman

You’re already worried about the possibility of becoming a victim of a cyber scam. Be sure you clearly understand what your cyber insurance coverage is, or you may feel like you got taken ...

Cyber Attacks Mean Double the Trouble in 2018

Oct 8, 2018 4:17:21 PM By Stu Sjouwerman

According to the 2018 Traveler’s Risk Index, the percentage of businesses that have been the victim of a cyberattack has doubled… and most businesses aren’t even remotely ready.

Vishing Scams are Increasingly Difficult to Detect

Oct 8, 2018 10:32:44 AM By Stu Sjouwerman

Phone scams are becoming more convincing as attackers devise new ways to sound legitimate. KrebsOnSecurity recently spoke with several readers who'd been targeted by voice phishing, or ...

KnowBe4 Introduces New Features: Virtual Risk Officer and Advanced Reporting

Oct 8, 2018 8:46:32 AM By Stu Sjouwerman

We are excited to announce the availability of two new features, Virtual Risk Officer and Advanced Reporting.

British Government: "The Russian GRU Is Responsible For BadRabbit Ransomware And Many Other Cyber Crimes"

Oct 8, 2018 7:13:38 AM By Stu Sjouwerman

October 4th, 2018. Announced by the UK National Cyber Security Centre (NCSC), the UK and its allies exposed a ransomware campaign by the GRU, the Russian military intelligence service, of ...

KnowBe4's Phish Alert Button Now Works With Outlook Mobile!

Oct 5, 2018 12:44:35 PM By Stu Sjouwerman

Do your users know what to do when they receive a suspicious email? Should they call the help desk, or forward it? Should they forward to IT including all headers? Delete and not report ...

KnowBe4's Chief Hacking Officer Kevin Mitnick demonstrates the USB Ninja cable attack

Oct 5, 2018 12:41:51 PM By Stu Sjouwerman

Over the last few months, Kevin has been talking about this possibility: embedding malicious code in cables. This is a brand new demo where he shows this is now technically feasible! See ...

KnowBe4 Fresh Content and New Features Update September 2018

Oct 5, 2018 9:51:29 AM By Stu Sjouwerman

Check out the new features and training content in the KnowBe4 platform for September! So how much security awareness training content do you have access to with a Diamond subscription? ...

KnowBe4’s Year-Over-Year Sales Nearly Double for Q3 2018

Oct 4, 2018 3:38:31 PM By Stu Sjouwerman

I'm excited to announce our incredible year-over-year sales increase, nearly doubling 2017's third quarter sales in this third quarter of 2018, breaking records with new corporate ...

Retail is Unprepared for Social Engineering

Oct 4, 2018 6:50:15 AM By Stu Sjouwerman

The latest data from SecurityScorecard shows the retail industry’s security stance is at an all-time low, and is particularly susceptible to social engineering attacks. The retail ...

Bleeding Edge Phishing Attack Uses Decoy PDF with Microsoft-issued SSL Cert

Oct 3, 2018 2:21:01 PM By Stu Sjouwerman

TL,DR: A recent phishing attack posing as a PDF decoy from a Denver law firm was stealing clients' Office 365 credentials. The phishing bait was hosted in Azure blob storage and contained ...

Hackers: Social Engineering is Easier

Oct 2, 2018 5:15:41 PM By Stu Sjouwerman

Despite the presence of application and OS vulnerabilities – both new and old – hackers prefer to leverage social engineering as their preferred attack method.

Worry About Phishing, Not Malware!

Oct 2, 2018 5:10:25 PM By Stu Sjouwerman

With so many security strategies revolving around the detection of malware, organizations forget the primary source of all their worries – phishing.

CyberheistNews Vol 8 #39 [Heads-Up] Now in the Wild: New Super Evil Rootkit Survives Even "Nuke From Orbit" and HD Swap

Oct 1, 2018 9:57:27 AM By Stu Sjouwerman

[Heads-up] Now In The Wild: New Super Evil Rootkit Survives Even "Nuke From Orbit" And HD Swap

Sep 30, 2018 7:56:38 AM By Stu Sjouwerman

This thing is a nightmare that escaped into daylight. The Russian GRU—aka Fancy Bear—probably was riveted reading the Wikileaks CIA Vault 7 UEFI Rootkit docs (PDF) and built one of these ...

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