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

Framing the Social Engineering Risk in Business Terms

Oct 7, 2021 8:54:26 AM By Stu Sjouwerman

C-suite employees need to understand the risk posed by social engineering attacks, according to CSO. Terry Thompson, adjunct instructor in cybersecurity at Johns Hopkins University, told ...

Your KnowBe4 Fresh Content Updates from September

Oct 6, 2021 8:00:00 AM By Stu Sjouwerman

With 52 new pieces of training content added this month, check out the always fresh content update highlights and new features from the month of September.

[On-Demand Webinar] 5 Things You Need To Know About Ransomware Before It's Too Late

Oct 6, 2021 8:00:00 AM By Stu Sjouwerman

Cybercriminals have become thoughtful about ransomware attacks; taking time to maximize your organization’s potential damage and their payoff. And few organizations are prepared to ...

Telecom Company Responsible for Routing Billions of Text Messages Annually Acknowledges Multi-Year Breach

Oct 5, 2021 5:21:24 PM By Stu Sjouwerman

Mentioned in passing as part of a Securities and Exchange Commission (SEC) filing, Syniverse admits to hackers having access for five years, potentially impacting millions of mobile phone ...

CyberheistNews Vol 11 #39 [New Criminal Tactic]: Shortened LinkedIn URLs Are Now Used as Phish Hooks

Oct 5, 2021 9:30:00 AM By Stu Sjouwerman

Phishing: Low- Middle- and High-Level

Oct 5, 2021 9:05:27 AM By Stu Sjouwerman

Phishing attacks have varying levels of technical sophistication, according to Mark Nicholls from Redscan. In an article published by ITProPortal, Nicholls explains that the lowest level ...

New James Bond Movie is Cybercriminals Shiniest Phishbait

Oct 4, 2021 8:41:31 AM By Stu Sjouwerman

Cybercriminals are using the new James Bond movie, No Time to Die, as phishbait, the National reports. Researchers at Kaspersky warn that malicious ads and phishing sites are claiming, ...

Hackers rob thousands of Coinbase customers using phishing attacks and an MFA flaw

Oct 3, 2021 10:02:42 AM By Stu Sjouwerman

Bleepingcomputer was first to report: "Crypto exchange Coinbase disclosed that a threat actor stole cryptocurrency from 6,000 customers after using a vulnerability to bypass the company's ...

Phishing Attacks Maintain “New Normal” Elevated Levels into the Middle of 2021

Oct 1, 2021 1:08:46 PM By Stu Sjouwerman

New data from the Anti-Phishing Working Group (AWPG) shows the Q2 of 2021 showed similar phishing activity to that of Q1, indicating no slowdown in attacks.

90% of All Cyber Attacks on Organizations Involve Social Engineering

Oct 1, 2021 1:08:42 PM By Stu Sjouwerman

It’s official: threat actors and cybercriminal gangs alike are enlightened and have locked in on the use of social engineering as the primary means to trick recipients into becoming ...

Phishing Campaign Impersonates Zix Messages

Oct 1, 2021 1:06:13 PM By Stu Sjouwerman

Researchers at Armorblox have spotted a credential phishing campaign that’s impersonating encrypted communications from Zix. The emails contain a link to download an HTML attachment.

Europol: Italian Mafia Tied to Cybercriminals Responsible for €10 Million in Cyberattacks

Sep 30, 2021 8:19:31 AM By Stu Sjouwerman

The recent dismantling of a cybercriminal gang has uncovered ties to the Italian Mafia, demonstrating that even traditional organized crime is moving to cyber.

5th Circuit Court Finds Cyber Insurer Must Pay for $1 Million Social Engineering Attack

Sep 30, 2021 8:19:24 AM By Stu Sjouwerman

A simple social engineered Business Email Compromise attack resulted in fraud that the cyber insurer contended was not covered under the policy.

Phishing Kits and Phishing-as-a-Service Responsible for Over 300,000 URLs Used in Phishing Attacks

Sep 30, 2021 8:19:15 AM By Stu Sjouwerman

Lowering the barrier to market even more, this new Phishing as a Service (PhaaS) spotted by Microsoft puts quality phishing templates and sites into the hands of any would-be cyber ...

Someone's Impersonating the California DMV in Texts

Sep 29, 2021 9:00:09 AM By Stu Sjouwerman

The California DMV has warned of an ongoing smishing campaign seeking customers’ personal and financial information, Pasadena Now reports.

CyberheistNews Vol 11 #38 [EYE OPENER] Over 100 Million Lost to Romance/Crypto Scams in First Seven Months

Sep 28, 2021 9:29:24 AM By Stu Sjouwerman

Google Ads Abused to Deliver Malware

Sep 28, 2021 8:40:32 AM By Stu Sjouwerman

Cybercriminals are using malicious Google Ads to deliver the ZLoader banking Trojan, ZDNet reports. Researchers at Microsoft stated on Twitter that attackers are purchasing Google Ads ...

New Tactic: Shortened LinkedIn URLs Are Now Used As Phish Hooks

Sep 27, 2021 8:32:30 AM By Stu Sjouwerman

Scammers are using shortened LinkedIn URLs to disguise phishing links, according to Jeremy Fuchs at Avanan. LinkedIn automatically shortens links that are longer than 26 characters. The ...

WHAT IS XDR (EXTENDED DETECTION AND RESPONSE)?

Sep 24, 2021 2:45:23 PM By Stu Sjouwerman

ReliaQuest published a good article a little while back that quickly defines XDR and what it can do for you. This may save you some time and gets you up to speed on the latest security ...

Newest iPhone Launch is Now a Scammer's Advantage

Sep 23, 2021 8:50:49 AM By Stu Sjouwerman

Scammers are taking advantage of the launch of iPhone 13, according to researchers at Zscaler. The launch event was streamed live last week on Apple’s official YouTube channel, and ...

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