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

Credential Stuffing to Stuff the Ballot Box

Sep 22, 2020 10:20:17 AM By Stu Sjouwerman

Advanced nation-state actors and petty criminals are both leveraging credential-stuffing attacks to hack into victims’ accounts, according to Byron Acohido, writing for Avast. Rather than ...

CyberheistNews Vol 10 #39 CrowdStrike: "More Cyberattacks in the First Half of 2020 Than in All of 2019"

Sep 22, 2020 9:29:36 AM By Stu Sjouwerman

Credential Stuffing Used Against Financial Services

Sep 21, 2020 8:27:15 AM By Stu Sjouwerman

A security alert from the FBI warns that hackers are launching credential-stuffing attacks against organizations in the financial sector, ZDNet reports.

[On-Demand] Your Organization Through the Eyes of an Attacker

Sep 21, 2020 7:00:00 AM By Stu Sjouwerman

The bad guys are out there, watching and waiting for an opportunity to strike. They are gathering information about your organization and users, devising the perfect plan to infiltrate ...

[Announcement] KnowBe4 ModStore: New Series "Security Snapshots" from Twist & Shout

Sep 19, 2020 9:58:36 AM By Stu Sjouwerman

They've made you laugh. They've made you cry. You know and love them! Twist & Shout are here once again with a series of 12 stand-alone security micro-dramas! These Security Snapshots ...

Bitcoin Millionaire Loses $16 Million to a Compromised Wallet and Simple Social Engineering

Sep 18, 2020 7:01:00 AM By Stu Sjouwerman

This brief tale of misfortune shows how unpatched software and letting your guard down – especially when $16 million is on the line – can be all that’s needed for a successful scam.

Joint Cybersecurity Advisory Outlines Approaches to Discovering and Remediating Attacks

Sep 18, 2020 7:00:00 AM By Stu Sjouwerman

This newly-released report is the result of a collaborative effort by cybersecurity authorities in Australia, Canada, New Zealand, the United Kingdom, and the United States.

Crowdstrike: "More Cyberattacks in the First Half of 2020 Than in All of 2019"

Sep 16, 2020 10:26:18 AM By Stu Sjouwerman

According to a recent study conducted by cybersecurity firm CrowdStrike, recent threat activity throughout its customers’ networks has shown more intrusion attempts within the first half ...

When Phishing And Disinformation Meet

Sep 16, 2020 8:49:42 AM By Stu Sjouwerman

The Insider reported that QAnon is co-opting a USPS phishing scam, and claim the Vishing text messages are linked to human trafficking. "A viral [text] phishing scheme is targeting people ...

How to Become a Harder Target From Malicious Threat Actors

Sep 16, 2020 8:30:35 AM By Stu Sjouwerman

The US Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA) has issued an advisory regarding threat actors associated with China’s Ministry of State ...

CyberheistNews Vol 10 #38 [Heads Up] My Name Is Being Used in Criminal Identity Theft Attacks at the Moment

Sep 15, 2020 9:29:26 AM By Stu Sjouwerman

Security Awareness Advocate Kai Roer Discusses the 2020 Security Culture Report

Sep 15, 2020 8:53:38 AM By Stu Sjouwerman

Our security awareness advocate Kai Roer recently did an interview with Cybercrime Magazine. Kai discusses the history of CLTRe (now KnowBe4 Research) and his background on security ...

High-Profile Caper Spawns Phishing Campaign

Sep 15, 2020 8:31:04 AM By Stu Sjouwerman

A phishing campaign is using the recent Twitter hack as phishbait, HackRead reports. In mid-July, hackers used social engineering against Twitter employees to gain access to more than a ...

Funds Transfer Fraud Has Increased 35% Since the Onset of COVID-19

Sep 14, 2020 10:49:30 AM By Stu Sjouwerman

With reported losses from thousands of dollars to well over $1 million, funds transfer fraud represents 27% of cyber insurance claims in 2020.

Business Email Compromise attacks increase 67% Leading to Fraud, Ransomware, and Data Breaches

Sep 14, 2020 10:34:13 AM By Stu Sjouwerman

Involved in 60% of cybersecurity insurance claims, Business Email Compromise (BEC) is growing in interest by cybercriminals as the initial malicious action as part of a larger attack.

CISA’s Advice on Countering Phishing

Sep 14, 2020 10:19:06 AM By Stu Sjouwerman

The US Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA) has published an advisory on best practices to thwart email-based phishing attacks. The ...

Ransomware Dominates 41% of all Cyber Insurance Claims in H1 2020

Sep 11, 2020 11:00:51 AM By Stu Sjouwerman

Just-released data from cyber insurer Coalition shows massive increases in both the frequency of ransomware attacks and the ransom demand with Maze and Ryuk leading the way.

Fake Alert Scams: Actually Unwanted Programs

Sep 10, 2020 3:05:22 PM By Stu Sjouwerman

Mobile tech support scams are on the rise, according to researchers at Sophos. These scams are similar to traditional desktop tech support scams, in that they try to frighten the user ...

The Dangerous Attraction of Original Gangsters

Sep 9, 2020 8:27:21 AM By Stu Sjouwerman

Users need to be mindful of the ways in which hackers can take over their accounts, according to Brian Krebs. Krebs says his experience as the owner of an “OG” Gmail address made him ...

Extradited Member of a U.K. Scammer Highlights How His Gang Took Banks for $2 Million

Sep 8, 2020 1:45:28 PM By Stu Sjouwerman

Details on how this global gang of cybercriminals used spoofing and impersonation methods to social engineer banks time and time again shows how effective these tactics are.

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