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

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Cyber-Zombie Apocalypse: Ransomware Gangs Continue to Come Back from the Dead

Oct 14, 2022 9:03:02 AM By Stu Sjouwerman

With ransomware gangs making so much money and then dropping off the face of the earth, what’s the motivation to come back to life and potentially risk getting caught?

German Hackers Arrested for Stealing €4 Million in 7-Month Banking Phishing Scams

Oct 14, 2022 9:02:56 AM By Stu Sjouwerman

The recent arrest demonstrates how very small and unsophisticated a cybercriminal team can be to launch a very successful phishing campaign that takes victims for millions.

Small Business Grants as Phishbait

Oct 13, 2022 9:10:04 AM By Stu Sjouwerman

INKY has published a report on the use of small business grants as phishing lures. Scammers are impersonating the US Small Business Administration (SBA) to distribute phony grant ...

A New Phishing-as-a-Service Kit

Oct 12, 2022 12:00:00 PM By Stu Sjouwerman

Researchers at Mandiant have published an analysis of a phishing-as-a-service kit called “Caffeine,” which further lowers the bar for inexperienced cybercriminals by offering a publicly ...

79 Million Malicious Domains Flagged in the First Half of 2022

Oct 12, 2022 12:00:00 PM By Stu Sjouwerman

Security researchers at Akamai identify an average of 13 million newly observed domains (NOD) each month this year, representing about 20% of the NODs resolved in the same timeframe.

Three-Quarters of Ethical Hackers Can Collect and (Potentially) Exfiltrate Data in 10 Hours or Less

Oct 12, 2022 12:00:00 PM By Stu Sjouwerman

New insight from the SANS Institute surveying 300 ethical hackers sheds some light on how they perceive your security stance – and how easy it is for them to break in despite your efforts.

Encrypted Files are the Overwhelming Way Organizations “Detect” Ransomware Attacks

Oct 12, 2022 12:00:00 PM By Stu Sjouwerman

New analysis of cyberattacks shows that organizations aren’t able to properly detect ransomware attacks, resulting in a majority of victims paying the ransom to retrieve data.

CyberheistNews Vol 12 #41 [HEADS UP] The Old Nigerian Prince Scam Resurfaces as Russian Billionaire Fraud

Oct 11, 2022 11:28:34 AM By Stu Sjouwerman

[Heads Up] Almost 19 percent of phishing emails bypass Microsoft Defender

Oct 9, 2022 1:05:35 PM By Stu Sjouwerman

Check Point Software is one of the world's best-known and largest infosec companies. In September 2021 they acquired email security company Avanan and recently they updated Check Point's ...

[Head Scratcher] The cyber insurance market is badly broken. But why exactly?

Oct 9, 2022 11:41:09 AM By Stu Sjouwerman

Greg Noone at the Techmonitor site covered this problem early October 2022, starting with a horror story.

KnowBe4 Celebrates Winning a Tech Cares Award From TrustRadius 2022

Oct 6, 2022 2:52:36 PM By Stu Sjouwerman

For the third consecutive year, we received a Tech Cares Award from TrustRadius! This third annual award celebrates companies that have gone above and beyond to provide strong Corporate ...

Cybercriminal Gets 25 Years Prison Time Over Romance Scams and Business Email Compromise Attacks

Oct 6, 2022 8:56:35 AM By Stu Sjouwerman

A man from Atlanta, Georgia has been convicted of running romance scams and business email compromise attacks that netted him over $9.5 million, the US Justice Department has announced.

IRS Warns of A Spike in Smishing Attacks

Oct 5, 2022 9:22:59 AM By Stu Sjouwerman

The US Internal Revenue Service (IRS) has issued an alert warning of a significant rise in text message phishing scams (smishing) impersonating the IRS since the beginning of the year.

FCC Warns of Post-Hurricane Scams

Oct 4, 2022 9:58:33 AM By Stu Sjouwerman

The US Federal Communications Commission (FCC) offers advice on how to avoid falling for scams that follow in the wake of natural disasters like Hurricane Ian. Scammers target victims of ...

KnowBe4 Named a Leader in the Fall 2022 G2 Grid Report for Security Awareness Training

Oct 4, 2022 9:50:25 AM By Stu Sjouwerman

We are thrilled to announce that KnowBe4 has been named a leader in the latest G2 Grid Report that compares Security Awareness Training (SAT) vendors based on user reviews, customer ...

KnowBe4 Named a Leader in the Fall 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

Oct 4, 2022 9:50:21 AM By Stu Sjouwerman

We are excited to announce that KnowBe4 has been named a leader in the Fall 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the PhishER platform for ...

CyberheistNews Vol 12 #40 [Eye Opener] The FBI Warns Against a New Cyber Attack Vector Called Business Identity Compromise (BIC)

Oct 4, 2022 9:30:00 AM By Stu Sjouwerman

Security Awareness Training Blog

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Stu Sjouwerman

Books

Recent Posts

Cyber-Zombie Apocalypse: Ransomware Gangs Continue to Come Back from the Dead

German Hackers Arrested for Stealing €4 Million in 7-Month Banking Phishing Scams

Small Business Grants as Phishbait

A New Phishing-as-a-Service Kit

79 Million Malicious Domains Flagged in the First Half of 2022

Three-Quarters of Ethical Hackers Can Collect and (Potentially) Exfiltrate Data in 10 Hours or Less

Encrypted Files are the Overwhelming Way Organizations “Detect” Ransomware Attacks

CyberheistNews Vol 12 #41 [HEADS UP] The Old Nigerian Prince Scam Resurfaces as Russian Billionaire Fraud

[Heads Up] Almost 19 percent of phishing emails bypass Microsoft Defender

[Head Scratcher] The cyber insurance market is badly broken. But why exactly?

KnowBe4 Celebrates Winning a Tech Cares Award From TrustRadius 2022

Cybercriminal Gets 25 Years Prison Time Over Romance Scams and Business Email Compromise Attacks

IRS Warns of A Spike in Smishing Attacks

FCC Warns of Post-Hurricane Scams

KnowBe4 Named a Leader in the Fall 2022 G2 Grid Report for Security Awareness Training

KnowBe4 Named a Leader in the Fall 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

CyberheistNews Vol 12 #40 [Eye Opener] The FBI Warns Against a New Cyber Attack Vector Called Business Identity Compromise (BIC)

Cyber Risk Remains Top Concern for Businesses with a Distinct Lack of Unpreparedness

One-Fourth of Organizations Have Been Victim to a Ransomware Attack with 59% Starting with Email

[HEADS UP] The Old "Nigerian Prince Scam" resurfaces as "Russian Billionaire Fraud"

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