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

The Bank of Hawaii early alert of scam phone calls spoofing caller ID

Nov 26, 2019 5:52:14 AM By Stu Sjouwerman

In an early-alert sign, The Bank of Hawaii is warning of a spate of scam phone calls that are spoofing the caller ID of the bank’s real call center, the Honolulu Star-Advertiser reports. ...

Phishing Simulations Should be Educational, not Punitive

Nov 25, 2019 10:46:55 AM By Stu Sjouwerman

Phishing training programs need to be focused on educating employees rather than on shaming them, according to David Spark and Allan Alford, co-hosts of the Defense in Depth podcast. On ...

110 Nursing Homes Cut Off from Health Records in Ransomware Attack

Nov 23, 2019 11:40:36 AM By Stu Sjouwerman

Brian Krebs reported: "A ransomware outbreak has besieged a Wisconsin based IT company that provides cloud data hosting, security and access management to more than 100 nursing homes ...

Waterloo Brewing loses $2.1 million in social engineering cyberattack

Nov 22, 2019 1:56:38 PM By Stu Sjouwerman

Waterloo Brewing Ltd. says it has lost $2.1 million in what it calls a social engineering cyberattack. The Ontario brewery says the incident occurred in early November and involved the ...

Scripting the Language of Fraud

Nov 22, 2019 7:00:32 AM By Stu Sjouwerman

Scammers are constantly improving their craft and reusing techniques that are proven to work, and they sometimes share the most effective lines with other scammers, according to NPR. ...

Companies Expected to Lose $5.2 Trillion in Opportunity Due to Cyber Attacks Over the Next Five Years

Nov 22, 2019 6:53:29 AM By Stu Sjouwerman

The big business of cyberthreats gets stamped with a huge price tag by professional services company Accenture in their latest report on Securing the Digital Economy.

Ransomware Claims Are Up 50% in 2019 With Attacks Outpacing the Previous Five Years

Nov 22, 2019 6:49:51 AM By Stu Sjouwerman

According to cyber insurer Chubb, ransomware attacks are shifting industry focus and are becoming both more frequent and more expensive to address.

[Heads-up. This Is Ugly] After Refusing The Maze Ransomware Payment, Their Stolen Data Was Leaked

Nov 22, 2019 6:47:54 AM By Stu Sjouwerman

After a deadline was missed for receiving a ransom payment, the group behind Maze Ransomware has published almost 700 MB worth of data and files stolen from a security staffing firm. Our ...

French Hospital Crippled by Ransomware

Nov 21, 2019 6:55:03 AM By Stu Sjouwerman

Patient care at a large hospital in northern France has suffered considerably after a major ransomware attack at the weekend, according to local reports. The University Hospital Center ...

A massive international email scam netted $3 million worth of top-secret US military equipment

Nov 21, 2019 6:42:43 AM By Stu Sjouwerman

In a recent case first reported by Quartz, a crew of international cyber criminals allegedly convinced an unidentified US defense contractor to send them millions of dollars worth of ...

It's Happening The World Over: $300K Lost To Phone Scammer

Nov 21, 2019 5:51:23 AM By Stu Sjouwerman

A woman in Singapore lost $300,000 to a scammer posing as a Singtel customer service employee, according to the Straits Times. The scammer told the victim he would fix some problems with ...

An Australian Watering Hole (but in Canberra, not the Outback)

Nov 20, 2019 7:12:14 AM By Stu Sjouwerman

The Australian Federal Parliament suffered a malware infection earlier this year after some users fell victim to a watering hole attack, the Australian Broadcasting Corporation (ABC) ...

Cybercriminal Gang, Silent Starling, Creates New ‘Vendor Email Compromise’ Category

Nov 19, 2019 2:38:04 PM By Stu Sjouwerman

New attacks focus on organizations with global supply chains looking to trick a supplier’s customers into paying fake invoices and have already impacted 500 organizations worldwide.

Malware Delivered Via Fake Browser Updates Are Back and are More Sophisticated Than Ever

Nov 19, 2019 2:34:30 PM By Stu Sjouwerman

Leveraging vulnerable website content management platforms, these attacks seek to trick users into installing malware under the guise that their web browser is out-of-date.

CyberheistNews Vol 9 #47 The Bad Guys Have a New Favorite Online Service to Exploit (and It May Be One You Never Heard of)

Nov 19, 2019 9:38:22 AM By Stu Sjouwerman

Security Awareness Training Blog

View Topics

Stu Sjouwerman

Books

Recent Posts

The Bank of Hawaii early alert of scam phone calls spoofing caller ID

Phishing Simulations Should be Educational, not Punitive

110 Nursing Homes Cut Off from Health Records in Ransomware Attack

Waterloo Brewing loses $2.1 million in social engineering cyberattack

Scripting the Language of Fraud

Companies Expected to Lose $5.2 Trillion in Opportunity Due to Cyber Attacks Over the Next Five Years

Ransomware Claims Are Up 50% in 2019 With Attacks Outpacing the Previous Five Years

[Heads-up. This Is Ugly] After Refusing The Maze Ransomware Payment, Their Stolen Data Was Leaked

French Hospital Crippled by Ransomware

A massive international email scam netted $3 million worth of top-secret US military equipment

It's Happening The World Over: $300K Lost To Phone Scammer

An Australian Watering Hole (but in Canberra, not the Outback)

Cybercriminal Gang, Silent Starling, Creates New ‘Vendor Email Compromise’ Category

Malware Delivered Via Fake Browser Updates Are Back and are More Sophisticated Than Ever

CyberheistNews Vol 9 #47 The Bad Guys Have a New Favorite Online Service to Exploit (and It May Be One You Never Heard of)

Now HERE is an interesting Phishing Campaign!

Ransomware Attack Hits Louisiana State Servers

A Look at Election Influence And Social Engineering

Real Estate Scams Have Gone Global. Bad Guys Caused Tens of Thousands of Dollars Damage Down Under

Malicious Actors the World Over Endorse This One Security Practice

Search Our Blog

Subscribe To Our Blog

Posts By Topic

Get the latest about social engineering

Subscribe to CyberheistNews

Get the latest about social engineering

Subscribe to CyberheistNews