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

New COVID-19 Phishing Wave Misuses Google Forms to Steal Victim Information

Oct 18, 2022 2:41:20 PM By Stu Sjouwerman

This new credential harvesting scam impersonates a real U.S. Government COVID-related grant program to harvest credentials and personal details using a blatantly obvious Google form.

91% of Organizations are Concerned About Ransomware Attacks in 2022

Oct 18, 2022 2:41:17 PM By Stu Sjouwerman

With ransomware attacks becoming more frequent, evasion getting more sophisticated, and ransoms increasing, new data shows organizations aren’t fighting for staff and budget.

[HEADS UP] South African Post Office Sends Warning of Targeted Phishing Attacks

Oct 18, 2022 1:31:01 PM By Stu Sjouwerman

The South Africa Post Office (SAPO) recently warned customers of phishing emails to portray the post office. These cybercriminals are asking for outstanding customs fees that require ...

WSJ: "Cybersecurity Tops the CIO Agenda as Threats Continue to Escalate"

Oct 18, 2022 10:42:39 AM By Stu Sjouwerman

Steven Rosenbush at the WSJ reported: "Chief information officers say cybersecurity once again will be their top investment priority in 2023, a sign of how companies are racing to manage ...

Name-and-Shame Scams on Discord

Oct 18, 2022 10:05:18 AM By Stu Sjouwerman

Scammers are sending Discord messages with phony accusations to trick users into clicking on phishing links, according to Shan Abdul at MakeUseOf. The messages are sent from compromised ...

CyberheistNews Vol 12 #42 [Heads Up] Almost 19% of Phishing Emails Bypass Microsoft Defender

Oct 18, 2022 9:30:00 AM By Stu Sjouwerman

Sloppy but Dangerous: Fake Ransomware

Oct 17, 2022 8:34:05 AM By Stu Sjouwerman

Conventional ransomware encrypts the victims’ files and holds them hostage, unavailable to their owners, promising to provide a decryptor once the victims pay the ransom. In some cases ...

Cyberattacks are the biggest risk to the UK financial system – Bank of England research

Oct 15, 2022 9:38:11 AM By Stu Sjouwerman

Cyberattacks are the biggest risk to the UK financial system, according to new research from the Bank of England.

New Phishing Campaign Uses Office Docs to Install Cobalt Strike Beacon

Oct 14, 2022 9:03:08 AM By Stu Sjouwerman

Under the guise of determining applicant eligibility for a U.S. federal government job, this latest phishing attack plants the seed for a future attack on the victim organization.

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 ...

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Stu Sjouwerman

Books

Recent Posts

New COVID-19 Phishing Wave Misuses Google Forms to Steal Victim Information

91% of Organizations are Concerned About Ransomware Attacks in 2022

[HEADS UP] South African Post Office Sends Warning of Targeted Phishing Attacks

WSJ: "Cybersecurity Tops the CIO Agenda as Threats Continue to Escalate"

Name-and-Shame Scams on Discord

CyberheistNews Vol 12 #42 [Heads Up] Almost 19% of Phishing Emails Bypass Microsoft Defender

Sloppy but Dangerous: Fake Ransomware

Cyberattacks are the biggest risk to the UK financial system – Bank of England research

New Phishing Campaign Uses Office Docs to Install Cobalt Strike Beacon

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

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