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

LinkedIn is the Most Impersonated Brand in Phishing Attacks

Apr 21, 2022 12:25:45 PM By Stu Sjouwerman

Social media companies, particularly LinkedIn, are now the most impersonated brands in phishing campaigns, researchers at Check Point have found.

New Phishing Attack Targets MetaMask Users for their Crypto Wallet Private Keys

Apr 21, 2022 11:46:04 AM By Stu Sjouwerman

A new phishing campaign impersonates MetaMask, informs victims their cryptocurrency wallets aren’t “verified” and threatens suspension.

UK Information Commissioner: Many Cybersecurity Incidents are “Preventable”

Apr 21, 2022 11:45:27 AM By Stu Sjouwerman

In a recent article about the largest cyberthreats currently facing the UK, John Edwards – the UK’s newly-appointed information commissioner- talks about the need for a security culture ...

Critical: CISA Warns of Potential Attacks on Infrastructure by Russian State-Sponsored and Criminal Cyber Gangs

Apr 21, 2022 10:14:00 AM By Stu Sjouwerman

In a joint multi-country cybersecurity advisory (CSA), governments are warning their respective critical infrastructure organizations to be vigilant against increased malicious cyber ...

TraderTraitor: When States do Social Engineering

Apr 20, 2022 8:49:57 AM By Stu Sjouwerman

North Korea’s Lazarus Group is using social engineering attacks to target users of cryptocurrency, according to a joint advisory from the US FBI, the Cybersecurity and Infrastructure ...

Ransomware Attacks Show Temporary Slowing but are Expected to Increase in 2022 [Graphs]

Apr 19, 2022 10:33:27 AM By Stu Sjouwerman

New data from Recorded Future shows how the war in Ukraine is causing a brief slowdown of ransomware attacks on healthcare, governments and schools that is predicted to return to growing ...

Only Half of All Organizations Have Refreshed Their Security Strategy Based on the Pandemic

Apr 19, 2022 10:31:40 AM By Stu Sjouwerman

A new study published by Ponemon Institute shows that a material portion of organizations are still using pre-pandemic security processes and policies, putting the org at risk.

FBI Warns of Bank Fraud Smishing Campaign

Apr 19, 2022 10:31:22 AM By Stu Sjouwerman

The FBI has warned of a smishing campaign that’s targeting people in the US with phony bank fraud notifications. The text messages inform users that someone has attempted to initiate a ...

CyberheistNews Vol 12 #16 [Eye Opener] The Costliest Cybercrime: Business Email Compromise (BEC)

Apr 19, 2022 9:57:22 AM By Stu Sjouwerman

Social Engineering Campaign against African Banks

Apr 18, 2022 9:40:04 AM By Stu Sjouwerman

A phishing campaign is targeting African banks with a technique called “HTML smuggling” to bypass security filters, according to threat researchers at HP.

“Being Annoying” as a Social Engineering Approach

Apr 18, 2022 8:42:15 AM By Stu Sjouwerman

Attackers are spamming multifactor authentication (MFA) prompts in an attempt to irritate users into approving the login, Ars Technica reports. Both criminal and nation-state actors are ...

Q1 2022 Report: Holiday-Themed Phishing Emails Entice Employees to Click [INFOGRAPHIC]

Apr 15, 2022 10:49:24 AM By Stu Sjouwerman

KnowBe4's latest quarterly report on top-clicked phishing email subjects is here. We analyze the top categories, general subjects (in both the United States and globally), and 'in the ...

Small and Medium Businesses Account for Nearly Half of all Ransomware Victim Organizations

Apr 13, 2022 4:44:27 PM By Stu Sjouwerman

As ransomware costs increase, along with the effectiveness and use of extortions, smaller businesses are paying the price, according to new data from Webroot.

One in Three U.K. Businesses Experience Cyber Attacks Weekly

Apr 13, 2022 4:43:29 PM By Stu Sjouwerman

New data from the U.K. Government’s Cyber Security Breaches Survey 2022 report shows that a material portion of businesses and charities are being attacked and feeling the repercussions.

Meta Stops Three Cyber Espionage Groups Targeting Critical Industries

Apr 13, 2022 4:43:06 PM By Stu Sjouwerman

Impersonating legitimate companies and using a complex mix of fake personas across Facebook, Telegram, and other platforms, these groups used social engineering to gain network access.

Smishing Scams Abuse Name of Legitimate Ukrainian Charity

Apr 13, 2022 9:54:14 AM By Stu Sjouwerman

Researchers at Trend Micro have spotted yet another scam taking advantage of the crisis in Ukraine by impersonating a legitimate charity. In this case, the scammers are posing as the ...

CyberheistNews Vol 12 #15 [Heads Up] Hard-boiled Social Engineering by a Fake "Emergency Data Request"

Apr 12, 2022 9:31:43 AM By Stu Sjouwerman

CyberheistNews Vol 12 #15 | Apr. 12th., 2022 [Heads Up] Hard-boiled Social Engineering by a Fake "Emergency Data Request" Bloomberg has reported that forged "Emergency Data Requests" last ...

Business Email Compromise (BEC): the Costliest Cybercrime

Apr 12, 2022 8:52:35 AM By Stu Sjouwerman

Organizations in the US lost $2.4 billion to business email compromise (BEC) scams (also known as CEO fraud) last year, according to Alan Suderman at Fortune.

Microsoft Azure's Static Web Apps Service Becomes the New Home for Phishing Attacks

Apr 11, 2022 3:15:00 PM By Stu Sjouwerman

Taking advantage of the value of a legitimate web service, along with a valid SSL certificate, a new campaign of phishing attack targeting online Microsoft credentials is leveraging Azure.

KnowBe4 Named a Leader in the Spring 2022 G2 Grid Report for Security Awareness Training

Apr 11, 2022 8:00:00 AM By Stu Sjouwerman

We are thrilled to announce that KnowBe4 has been named a leader in the latest G2 Grid Report that compares Security Awareness Training (SAT) vendors based on user reviews, customer ...

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