Human Risk Management Blog

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Stay on top of the latest in security including social engineering, ransomware and phishing attacks.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman 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.


Recent Posts

Scam Of The Week Payroll Phish

The nakedsecurity blog over at Sophos highlighted a new phishing scam that would be good to alert your employees about. The bad guys are pretending to be payroll processing company ADP. ...

Malware Metastasizes

A few days ago I wrote about a 60 million Euro cyberheist. I have been digging into this a bit more, as it's the most advanced attack yet. Cybercrime is not revolutionary, it clearly ...

KnowBe4 Philosophy

[caption id="" align="alignright" width="250" caption="KnowBe4 Philosophy"][/caption] We are happy to go against the grain. We’re not a massive developer that turns out bloatware year ...

Bank Settles With California Cyberheist Victim

Finally, a positive outcome in a cyberheist lawsuit. Brian Krebs reported that a Professional Business Bank settled with a Village View Escrow Inc, a California cyberheist victim. A ...

60 Million Euro Stolen In Biggest Cyberheist Ever

[caption id="" align="alignleft" width="390" caption="60 million Cyberheist"][/caption] This is exactly what I have been warning against in my book cyberheist. McAfee and Guardian ...

Why pill pushing spam pays off

Brian Krebs is on a roll. Here is why pill pushing spam pays off. "Consumer demand for cheap prescription drugs sold through spam-advertised Web sites shows no sign of abating, according ...

OMG - I did not know it was THIS horrible.

More from Brian Krebs's astounding blog post today. "As the chart I compiled above indicates, attackers are switching the lure or spoofed brand quite often, but popular choices include ...

A Closer Look: Email-Based Ransomware Attacks

With the increase of email phishing attacks being the primary attack vector, ransomware payments have risen to 60%, it's important to take a closer look at email-based ransomware attacks.

Kevin Mitnick Security Awareness Training Success Stories

Powerful New System Admin Tool: InstantRevert

[caption id="" align="alignleft" width="370" caption="InstantRevert, a powerful new system admin tool"][/caption] KnowBe4 has released a powerful new system admin tool: InstantRevert. ...

Message From Kevin Mitnick

Kevin sent the folowing letter to 1,442 people that over the last 3 years filled out the his contact us form on the www.mitnicksecurity.com website. Of these, 1082 were delivered. Now, ...

15 social media scams

From Facebook phishing lures to Twitter and Tumblr hoaxes, here are 15 scams to watch out for on social networking sites. CSO online took the time to put this slide show together and it's ...

Microsoft : "Civilian casualties inevitable in government cyber war"

Alastair Stevenson at the V3 site quoted Microsoft: "Cyber attacks such as Duqu, Stuxnet and Flame will inevitably hurt private companies and innocent people as well as governments, ...

Kevin Mitnick Partners With KnowBe4

Kevin Mitnick, at One Time the World's Most-Wanted Hacker, Joins Forces With Leading Internet Security Awareness Training Company KnowBe4, LLC CLEARWATER, Fla., June 18, 2012 -- Internet ...

Double-check that cashiers check

The fake cashier's check scam has gotten more sophisticated. Cathy Bussewitz at the pressdemocrat site reported on this one: "It usually starts when a seller posts a big-ticket item on ...

Scam Of The Week

[caption id="" align="alignleft" width="260" caption="LeakedIn"][/caption] Never 'check' your password. Change it! The last few weeks, it came to light that some major websites were ...

Survey Says: ACH Fraud Losses Down

[caption id="" align="alignleft" width="260" caption="Tracy Kitten"][/caption]It's not all bad news! Tracy Kitten over at BankInfoSecurity reported on a positive trend. "Banks are doing a ...

Half of Small Businesses Not Concerned About Security Breaches [INFOGRAPHIC]

Samantha Murphy at Mashable wrote: "Shred-It conducted a survey among 1,136 U.S. small business owners with companies of fewer than 100 employees, and 100 corporate-level executives who ...

Atomic scientists compare cyberwar to development of nuclear bomb

Foxnews reported on June 15, 2012: "Cyberbombs are the new atom bombs." "The Bulletin of the Atomic Scientists warned Friday that the race to build and deploy cyberweapons -- secret ...

Retelling a Password Nightmare in the Wake of the LinkedIn Password Leak

Alan Shimel tell us an enlightening and cautionary tale how his password was hijacked and how much time it took him to get it all back under control. This is a warmly recommended read ...


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