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

Discovered: A Whole New Strain Of Voice Phishing Attacks

Feb 28, 2019 11:07:32 AM By Stu Sjouwerman

What if social engineers, instead of calling victims with voice phishing attacks, intercepted phone calls their victims make to legitimate phone numbers? Malicious apps let cybercriminals ...

Friday Afternoon, Monday Morning, and Law Firm Risk

Feb 28, 2019 6:54:41 AM By Stu Sjouwerman

Law firm employees appear to be getting better at avoiding real estate scams, says Toni Ryder-McMullin at Today’s Conveyancer. Conveyance is the act of transferring an ownership interest ...

reCAPTCHA Phishbait Targets Google Users

Feb 28, 2019 6:18:46 AM By Stu Sjouwerman

A phishing campaign is using a phony Google reCAPTCHA system to deliver banking malware, according to researchers at Sucuri. The attackers are sending emails, supposedly from a Polish ...

It’s Cheaper Than You Think to Launch a Cyber Attack

Feb 28, 2019 5:51:43 AM By Stu Sjouwerman

According to the latest data from Deloitte, the cost of committing a cybercrime is so surprisingly low that anyone and everyone can afford to be a bad guy.

Healthcare Data Breaches Involve Triple the Records in 2018

Feb 27, 2019 5:48:35 PM By Stu Sjouwerman

As the healthcare industry continues to be a target in cyberattacks focused on data breaches of patient health records, the latest data shows that cybercriminals are taking more than ever.

KnowBe4 Named One of the Best Cybersecurity Blogs in the UK

Feb 27, 2019 5:42:28 PM By Stu Sjouwerman

I’m proud to announce that KnowBe4’s blog has been selected by 4D Data Centres as one of the top cybersecurity blogs of the year. These awards acknowledge outstanding content within the ...

CyberheistNews Vol 9 #9 Wendy’s to Pay $50M in Data Breach Settlement

Feb 26, 2019 9:32:15 AM By Stu Sjouwerman

Identity Theft by Low-Interest Credit Card Offer

Feb 26, 2019 7:23:26 AM By Stu Sjouwerman

Scammers have stolen large amounts of personal and financial information from thousands of Canadians via fraudulent phone calls offering lower interest rates on credit cards, an ...

It's The Season for Tax Scams... Again

Feb 26, 2019 7:19:23 AM By Stu Sjouwerman

America's Internal Revenue Service is warning taxpayers about a surge in phishing emails, links, and phone calls during tax season, according to Toni Birdsong at McAfee. The scammers pose ...

Bogus Job Offers as Phishbait

Feb 25, 2019 5:29:34 PM By Stu Sjouwerman

A series of phishing campaigns are targeting companies in various industries with phony job offers using direct messages on LinkedIn, according to researchers at Proofpoint. The attacker ...

Going to RSA in San Francisco Next Week? Get your Free Book Signed by Kevin Mitnick at KnowBe4’s Booth# 4624 North

Feb 25, 2019 4:53:18 PM By Stu Sjouwerman

Check out all the activities KnowBe4 will be doing at RSA:

Kevin Mitnick Demos Outlook Exchange Exploit

Feb 25, 2019 11:44:01 AM By Stu Sjouwerman

In a webinar last week Kevin Mitnick, KnowBe4's Chief Hacking Officer, shared a shocking demonstration of a recent Outlook Exchange exploit in which delegated access is allowed from any ...

Cyber Espionage Warning: The Most Advanced Hacking Groups Are Getting More Ambitious

Feb 24, 2019 11:04:35 AM By Stu Sjouwerman

Once attackers might have needed the latest zero-days to gain access to corporate networks, but now it's spear-phishing emails using social engineering tactics that are most likely to ...

The NoRelationship Attack Bypasses Office 365 Email Attachment Security

Feb 24, 2019 10:28:34 AM By Stu Sjouwerman

Attackers are bypassing Office 365 email attachment security by editing the relationship files that are included with Office documents, according to Yoav Nathaniel at Avanan. A ...

Phishing campaign attempts to spread a new brand of snooping malware

Feb 22, 2019 1:03:53 PM By Stu Sjouwerman

Danny Palmer at ZDNet had the scoop: "A cyber espionage campaign is targeting national security think tanks and academic institutions in the US in what's believed to be an intelligence ...

KnowBe4 Named Gold Winner for Cybersecurity Excellence Awards in Fastest Growing Cybersecurity Company Category

Feb 22, 2019 11:14:35 AM By Stu Sjouwerman

I'm excited to announce we have been named as the gold winner in the fastest growing cybersecurity company for between 500 to 999 employees category by the Cybersecurity Excellence Awards.

We Are In The Wrong Business. Cyber Extortionists Make $360K A Year.

Feb 21, 2019 4:48:59 PM By Stu Sjouwerman

Extortion scams capitalize on compromised credentials, sensitive data, and technical vulnerabilities on Internet-facing applications to pressure victims to pay up.

Various Types Of Phishing Attacks Defined

Feb 21, 2019 3:31:36 PM By Stu Sjouwerman

The definition of phishing is a cybercrime in which potential victims are contacted via email, telephone or text message by someone posing as a legitimate institution to lure individuals ...

Hackers take over Tampa Mayor Bob Buckhorn's Twitter account, make bomb threat at Tampa Airport

Feb 21, 2019 10:03:21 AM By Stu Sjouwerman

TAMPA, Fla. (WFLA) - Tampa police are investigating a bomb threat made against Tampa International Airport after hackers took over Tampa Mayor Bob Buckhorn’s Twitter account Thursday ...

Helping Employees Not Cause Data Breaches

Feb 20, 2019 4:57:52 PM By Stu Sjouwerman

Untrained employees with poor security habits pose a major risk to their employers, according to Ciara O’Brien at the Irish Times. O’Brien cites recent research conducted by Amarach on ...

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