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

FakeSpy Android Malware Distributed via Smishing

Jul 7, 2020 8:29:13 AM By Stu Sjouwerman

Researchers at Cybereason are tracking a sophisticated malware campaign targeting Android devices around the world. The campaign involves a new version of the FakeSpy information-stealing ...

New Calendar Invitations as Phishbait Attack Wave

Jul 6, 2020 3:19:48 PM By Stu Sjouwerman

BleepingComputer warns that cybercriminals are using calendar invites to send phishing links to Wells Fargo customers. Researchers at Abnormal Security discovered this phishing campaign ...

New Phishing Attack Targets 200M+ Microsoft 365 Accounts Via Malicious Excel .SLK Files to Bypass Security

Jul 6, 2020 3:10:03 PM By Stu Sjouwerman

Using an old (but supported) Excel filetype, attackers can bypass both Exchange Online Protection and Advanced Threat Protection to run malicious macros.

More Companies Start Reporting Their Ransomware Infections As The Expensive Data Breaches They Are

Jul 6, 2020 11:57:00 AM By Stu Sjouwerman

Larry Abrams at Bleepingcomputer correctly observed: "Corporate victims are finally starting to realize that ransomware attacks are data breaches and have begun to notify employees and ...

KnowBe4’s Q2 2020 Year-Over-Year Sales Grow 25%

Jul 4, 2020 9:47:36 AM By Stu Sjouwerman

We announced on July 2nd that 2020's second quarter was 25% higher in sales than Q2 2019, and that we are nearing a staff of 1,000 and 33,000+ customers worldwide. KnowBe4 continues on a ...

New ‘WastedLocker’ Ransomware Released by Evil Corp

Jul 2, 2020 10:45:13 PM By Stu Sjouwerman

The group associated with the Zeus trojan, Locky and BitPaymer looks to have debuted a new ransomware and have already seen massive distribution of it in the wild.

Half of all Remote Employees Aren’t the Slightest Bit Prepared for Cyberattacks

Jul 2, 2020 10:36:53 PM By Stu Sjouwerman

New data from IBM suggests that employees, their devices, training, and organizational policies are all lacking when it comes making sure remote workers don’t become a victim of ...

Microsoft 365 Phishing Attacks Masterfully Use Brand Name Sites to Establish Legitimacy

Jul 2, 2020 10:13:11 PM By Stu Sjouwerman

New voicemail phishing scam uses legitimate branded domains from companies like Samsung and Adobe to facilitate redirects to compromised websites intent on stealing credentials.

Business Email Compromise Attacks Focused on Invoice Fraud Surge by 75%

Jul 2, 2020 9:59:40 PM By Stu Sjouwerman

As attacks on the C-Suite decline, new data shows that employees in finance department roles are critical to the success of shifts in attack campaign strategy.

June Content Update: Including New Roger Grimes Video Series on Data-Driven Defense

Jul 2, 2020 3:41:59 PM By Stu Sjouwerman

Here are a few important content updates to share with you for the month of June.

Looking for Binge-Worthy Viewing Options This Summer?

Jul 2, 2020 1:03:12 PM By Stu Sjouwerman

Looking for some binge-worthy watching this summer? We've got just what you're looking for! Check out this innovative new security awareness video series called ‘The Inside Man’.

Elections In Russia Mean 16 More Years Of Job Security For InfoSec Pros

Jul 2, 2020 8:44:56 AM By Stu Sjouwerman

Russian voters have overwhelmingly backed a ploy by President Vladimir Putin to rule until 2036 in a referendum.

A "Secure DNS" Scam: an Upgrade that's a Downgrade

Jul 1, 2020 8:27:47 AM By Stu Sjouwerman

A phishing campaign is targeting website owners with convincing, personalized emails that purport to come from WordPress, Naked Security reports. The emails claim that WordPress is ...

COVID-19 Related Phishing Scams Target Passport Details

Jun 30, 2020 10:58:28 AM By Stu Sjouwerman

The Coronavirus phishing scams have only gotten more aggressive and targeted now than ever before, InfoSecurity Magazine reports. Now researchers at Griffin Law are tracking self-employed ...

Australia Spending Nearly $1 Billion on Cyberdefense as China Tensions Rise

Jun 30, 2020 10:09:06 AM By Stu Sjouwerman

The NY Times reported some surprising numbers: "Officials promised to recruit at least 500 cyberspies and build on the country’s offensive capabilities to take the online battle overseas. ...

CyberheistNews Vol 10 #27 [Heads Up] How Slack Phishing Works - The Latest Tricky Attack Vector

Jun 30, 2020 9:17:31 AM By Stu Sjouwerman

Phishing in Irish Streams

Jun 30, 2020 8:24:18 AM By Stu Sjouwerman

Netflix is warning users in Ireland to be on the lookout for another phishing campaign that’s impersonating the streaming service, Extra.ie reports. The emails inform recipients that ...

It's the Best of 2020! Cyber CSI: Learn How to Forensically Examine Phishing Emails to Better Protect Your Organization

Jun 29, 2020 3:10:24 PM By Stu Sjouwerman

Roger Grimes' lesson on how to forensically examine phishing emails received the highest viewer rating of any webinar so far this year. In case you missed it, make sure to watch this ...

60% of Organizations are Hit by Cyberattacks Spread by Their Own Employees

Jun 29, 2020 8:37:16 AM By Stu Sjouwerman

The unwitting participant appears to be alive and well, based on new data from security vendor Mimecast. With employees being the source of attack surface expansion, what’s an org to do?

New Sextortion Method Uses Social Engineering and Doxing To Identify and Target Victims

Jun 29, 2020 8:33:43 AM By Stu Sjouwerman

According to the SANS Internet Storm Center, cybercriminals are engaging their victims online, using social engineering tactics to collect needed details to extort money.

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