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

Equifax appears to be training recipients to fall for phishing scams

Sep 24, 2017 9:48:12 AM By Stu Sjouwerman

Brian Krebs wrote: "More than a week after it said most people would be eligible to enroll in a free year of its TrustedID identity theft monitoring service, big three consumer credit ...

Massive Spam Campaigns Push New Locky Ransomware With Doubled Ransom

Sep 22, 2017 2:50:00 PM By Stu Sjouwerman

Bleepingcomputer posted: "Reports are coming in from multiple security researchers and security firms about increased activity from one of the groups spreading the Locky ransomware. These ...

Nearly 1.5 Million New Phishing Sites Created Each Month

Sep 22, 2017 7:27:59 AM By Stu Sjouwerman

The September 2017 Webroot Quarterly Threat Trends Report showed that 1.385 million new, unique phishing sites are created each month, with a high of 2.3 million sites created in May. The ...

This Ransomware Demands Nudes Instead of Bitcoin

Sep 22, 2017 7:02:35 AM By Stu Sjouwerman

Cyber extortion is a very profitable criminal business model. Now, as if it was inevitable, someone has added a new, perverse twist: demanding naked photographs instead of Bitcoin, ...

You Need To See This, And It Will Make You Crap Your Pants

Sep 21, 2017 7:32:27 AM By Stu Sjouwerman

You and I know that your users are the weak link, things like ID10T and PEBKAC come to mind. But do you know how bad the problem really is? Some people like to bury their head in the sand ...

Barracuda Advanced Technology Group Tracks 20 Million Ransomware Phishing Attack

Sep 20, 2017 7:21:31 AM By Stu Sjouwerman

Barracuda Advanced Technology Group says it’s tracking a ransomware threat that has so far spawned about 20 million phishing emails sent to unsuspecting users around the world in the last ...

Aaaaand... You're fired (thanks to phishing)

Sep 20, 2017 7:07:21 AM By Stu Sjouwerman

The BBC has a cautionary tale for pretty much everyone who uses email. It’s the story of a finance director who was sacked after falling for a phishing scam disguised as a message from ...

Forbes Technology Group: Training Your Employees Ranks #2 In Preventing Ransomware Attacks

Sep 19, 2017 1:06:48 PM By Stu Sjouwerman

Forbes wrote a great article about protecting your organization against ransomware. Despite all the funds spent on state-of-the-art security software, the bad guys are always just one ...

Phishing attacks use undocumented MS Office feature to leak system profile data

Sep 19, 2017 6:44:43 AM By Stu Sjouwerman

An undocumented Microsoft Office feature allows attackers to gather sensitive configuration details on targeted systems simply by sending a phishing email and social engineering victims ...

CyberheistNews Vol 7 #37 Ransomware Can Destroy Backups in Four Ways

Sep 18, 2017 9:54:41 AM By Stu Sjouwerman

The CCleaner app, designed for good cyber hygiene, was itself infected with a backdoor by hackers

Sep 18, 2017 7:13:03 AM By Stu Sjouwerman

Cisco's TALOS security researchers discovered a devious way to infect millions of machines. They said: "Supply chain attacks are a very effective way to distribute malicious software into ...

This Week's Five Most Popular HackBusters Posts Sept 16

Sep 16, 2017 10:16:27 AM By Stu Sjouwerman

There is an enormous amount of noise in the security space, so how do you know what people really talk about and think is the most important topic? Well, we created the Hackbusters site ...

VEVO Data Breach Caused By LinkedIn Phishing Attack

Sep 15, 2017 10:35:41 AM By Stu Sjouwerman

A Vevo spokesperson told Gizmodo that the company “can confirm that Vevo experienced a data breach as a result of a phishing scam via Linkedin. We have addressed the issue and are ...

"Large Enterprises Spend Nearly $300K Per Year On Security Awareness Training." Really?

Sep 14, 2017 2:54:00 PM By Stu Sjouwerman

Security company Bromium put out a press release asking publicly: "Large Enterprises Spend Nearly $300K Per Year On Security Education, So Why Are Endpoint Attacks More Successful Than ...

U.S. Govt Orders Purge Of Kaspersky Products From Its Networks

Sep 14, 2017 5:49:43 AM By Stu Sjouwerman

WASHINGTON (Reuters) - The Trump administration on Wednesday told U.S. government agencies to remove Kaspersky Lab products from their networks, saying it was concerned the Moscow-based ...

Ransomware Can Destroy Backups In Four Ways

Sep 13, 2017 8:02:01 AM By Stu Sjouwerman

I just found a very interesting blog post by Jerome Wendt, President & Lead Analyst of DCIG, Inc., an independent storage analyst and consulting firm.

Trend Micro: CEOs Are The Most Spoofed

Sep 12, 2017 4:36:03 PM By Stu Sjouwerman

Trend Micro researchers reported that cybercriminals spoofed the CEO email address the most, with CFOs and finance directors being the top attack targets. In their 2017 Midyear Security ...

CyberheistNews Vol 7 #36 Scam of the Week: Equifax Phishing Attacks

Sep 11, 2017 9:30:00 AM By Stu Sjouwerman

CyberheistNews | KnowBe4

Scam Of The Week: Equifax Phishing Attacks

Sep 9, 2017 8:06:14 AM By Stu Sjouwerman

You already know that a 143 million Equifax records were compromised. The difference with this one is that a big-three credit bureau like Equifax tracks so much personal and sometimes ...

Equifax Reports Data Breach Possibly Impacting 143 Million U.S. Consumers

Sep 7, 2017 5:57:05 PM By Stu Sjouwerman

The Wall Street Journal just reported that Credit-reporting company Equifax Inc. disclosed Thursday that hackers gained access to some of its systems, compromising the personal ...

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