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

KnowBe4 Top-Clicked Phishing Email Subjects for Q3 2022 [INFOGRAPHIC]

Oct 26, 2022 2:31:34 PM By Stu Sjouwerman

KnowBe4's latest quarterly report on top-clicked phishing email subjects is here. We analyze 'in the wild' attacks reported via our Phish Alert Button, top subjects globally clicked on in ...

Don’t Let High-Tech Distract You from Low-Tech

Oct 26, 2022 10:58:13 AM By Stu Sjouwerman

Deepfakes, the realistic and thoroughly convincing fabrication of imagery, video, and audio that fakes the identity of some person in ways that are difficult to detect, have aroused ...

CyberheistNews Vol 12 #43 [Heads Up] This New Strain of Fake Ransomware Is Sloppy but Dangerous

Oct 25, 2022 9:30:00 AM By Stu Sjouwerman

[Eye Opener] Work In IT? You Get Attacked Much More Than Other Employees

Oct 24, 2022 3:17:13 PM By Stu Sjouwerman

We received an interesting email from Elevate Security you need to be aware of. Their recent research showed: "Social engineering attacks are growing more sophisticated every day, ...

Major UK Outsourcer Hit With Multi-Million Dollar Fine Due to a Phishing Attack

Oct 24, 2022 1:58:54 PM By Stu Sjouwerman

Britain's data watchdog has fined major construction group Interserve with a £4.4m fine. This was due to a cyber attack stole personal and financial details for over 113,000 employees and ...

Phishing for Student Email Accounts

Oct 24, 2022 9:23:57 AM By Stu Sjouwerman

University student accounts are being exploited for business email compromise. Researchers at Avanan have observed a rise in attacks that compromise legitimate college student accounts in ...

BazarCall Expands Callback Phishing Campaigns to Include More Support Sites and Malicious Tactics

Oct 21, 2022 1:59:44 PM By Stu Sjouwerman

The king of callback phishing campaigns has evolved their methods to include better phishing emails, phone call scams, and final payloads to ensure they achieve their malicious goals.

New Credential Harvesting Scam Impersonates Google Translate to Trick Victims

Oct 21, 2022 1:59:35 PM By Stu Sjouwerman

In an interesting twist, this latest scam identified by security researchers at Avanan attempts to establish legitimacy by making the victim think the logon page is being translated.

[INFOGRAPHIC] 10 Tips for Running a Successful Compliance Training Program

Oct 20, 2022 9:46:34 AM By Stu Sjouwerman

Compliance training is often seen as a chore that organizations need to just get through. That said, compliance cannot simply be ignored. A recent report from software firm GlobalScape ...

New Phishing Attack Attempts to Steal Social Security Numbers

Oct 20, 2022 8:54:27 AM By Stu Sjouwerman

A phishing campaign is impersonating the US Social Security Administration (SSA) in an attempt to steal Social Security numbers, according to researchers at INKY.

Phishing Targets US Election Workers

Oct 19, 2022 2:24:49 PM By Stu Sjouwerman

Researchers at Trellix warn of phishing attacks targeting election workers in advance of the US midterm elections. These attacks spiked ahead of the primary elections in Arizona and ...

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.

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