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

The Market for Phishing Kits

Oct 12, 2020 8:28:07 AM By Stu Sjouwerman

Inexperienced cybercriminals can easily find places to buy phishing kits in the open, on the “surface web” (as opposed to the deep or dark web), according to Jan Kopriva at the SANS ...

Scam Of The Week: Bad Guys Prep For Prime Day Phishing Attacks

Oct 10, 2020 10:37:42 AM By Stu Sjouwerman

Amazon, the world’s largest online retailer, hosts a massive sales event once a year called Prime Day. Usually set in July, the highly awaited two-day event was postponed until October ...

[HEADS UP] Local Boston Town Falls Victim to a Phishing Attack

Oct 9, 2020 2:03:48 PM By Stu Sjouwerman

According to a local news source from Boston, the Town of Franklin recently became the next victim to a phishing attack, costing over $500K.

Ransomware Attacks Will Keep Getting Worse

Oct 9, 2020 7:50:16 AM By Stu Sjouwerman

It may be time for organizations to stop paying the ransom when they sustain a ransomware attack, according to Caleb Barlow, CEO of CynergisTek. On the CyberWire’s Hacking Humans podcast, ...

New Mount Ransomware Joins the Millionaires Club Demanding Seven Figure Ransoms

Oct 9, 2020 7:46:55 AM By Stu Sjouwerman

With ransoms as high as $2 Million, the cybercriminal group behind this new family of ransomware is setting the bar pretty high, all while being the “new kid on the block”.

61% of Successful Phishing Attacks Against Government Organizations Result in Full Compromise of Credentials

Oct 9, 2020 7:44:18 AM By Stu Sjouwerman

Phishing remains the top primary attack vector that keeps on giving to cybercriminals, as new data highlights the victories cybercriminals are enjoying at your organization’s expense.

Cybersecurity Awareness Month Weekly Tip: Current Phishing Threats

Oct 9, 2020 7:00:00 AM By Stu Sjouwerman

Each week during Cybersecurity Awareness Month, we’re going to be sharing in-depth weekly cybersecurity tips from our evangelists to help your users make smarter security decisions and ...

An Autopsy of a $15 Million Heist

Oct 8, 2020 11:33:12 AM By Stu Sjouwerman

A company in the US lost $15 million in a two-month-long business email compromise scam, BleepingComputer reports. Researchers at Mitiga who investigated the attack told BleepingComputer ...

New Office 365 Phishing Attack Checks Your Stolen Credentials in Real-Time

Oct 7, 2020 10:06:20 AM By Stu Sjouwerman

Nothing says the bad guys are intent on stealing credentials like testing them while you participate in their phishing attack so they can verify the validity before letting you off the ...

USPS and FedEx Phishing Attack Texts Flood Mobile Phones

Oct 7, 2020 10:00:31 AM By Stu Sjouwerman

Taking a page from traditional phishing scams that seek to use broadly-accepted messages and send them to everyone, last month officially brought SMiShing to the cybersecurity forefront.

Gartner Recognizes KnowBe4 as a Representative Vendor for Security Awareness Training Program Platforms

Oct 7, 2020 8:31:46 AM By Stu Sjouwerman

We believe, as the world's largest security awareness training platform, this recognition validates the success of our ability to carry out our mission. We enable organizations and their ...

The Most Dangerous Celebrity of 2020...

Oct 7, 2020 8:22:09 AM By Stu Sjouwerman

...Is Anna Kendrick, according to researchers at McAfee. The researchers analyzed Internet search results for celebrities and found that Kendrick’s search results (through no fault of her ...

The Pesky Password Problem: Policies That Help You Gain the Upper Hand

Oct 7, 2020 7:00:00 AM By Stu Sjouwerman

What really makes a “strong” password? And why are your end-users tortured with them in the first place? How do hackers crack your passwords with ease? And what can/should you do about ...

CyberheistNews Vol 10 #41 [Heads Up] Paying Ransomware Criminals Might Land You a Steep Federal Fine

Oct 6, 2020 9:41:08 AM By Stu Sjouwerman

Scammers are using Black Lives Matter as Phishbait

Oct 6, 2020 8:25:16 AM By Stu Sjouwerman

A phishing campaign is using Black Lives Matter-themed phishing lures to trick people into installing malware, Yahoo reports. Adam Levin from Cyberscout told Yahoo that the phishing ...

Healthcare Sector Still Sustains Phishing Campaigns

Oct 5, 2020 8:29:52 AM By Stu Sjouwerman

No one should take too seriously the high-minded things criminals sometimes say about how they’re restraining themselves during the pandemic, and that they’re going to avoid hitting ...

New Articles and Updates From the KnowBe4 Technical Content Team in Q3 2020

Oct 5, 2020 7:00:00 AM By Stu Sjouwerman

Each quarter, KnowBe4's Product Content Team creates a video that highlights the updates that have been made to KnowBe4’s products over the past quarter. This is a great way to stay ...

[Heads Up] Scam of The Week: Watch Out For Trump COVID Disinformation

Oct 3, 2020 10:27:59 AM By Stu Sjouwerman

The bad guys are going to have a ball with this one. President Trump announced that he and first lady Melania are COVID Positive. This event will be used in a variety of ways through ...

[Heads up] Paying Ransomware Criminals Might Land You A Steep Federal Fine

Oct 3, 2020 10:04:34 AM By Stu Sjouwerman

The US Treasury Department's Office of Foreign Assets Control (OFAC) has sanctioned multiple ransomware criminals over the last few years, most notably the Russian cybercrime syndicate ...

Interesting Mini-Movie On Disinformation From The FBI

Oct 3, 2020 8:39:40 AM By Stu Sjouwerman

The FBI and the National Counterintelligence and Security Center (NCSC) released a new movie to increase awareness of how foreign intelligence entities use fake profiles and other forms ...

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