KnowBe4, a fast-growing security awareness training and phishing simulation provider, announced they have closed on a $30 million Series B investment led by Goldman Sachs. The funding comes on the heels of 18 consecutive quarters of growth, which resulted in the company landing at No. 231 on the Inc. 5000 annual ranking of the fastest-growing private companies in America.Kevin Mitnick, an internationally recognized computer security expert and KnowBe4\u2019s chief hacking officer \u2014\u00a0often referred to as the world\u2019s most famous hacker \u2014\u00a0helped design KnowBe4\u2019s cybersecurity training.Cyber threats and need for employee training continue to growHelping organizations combat the burgeoning ransomware threat by training their employees is a huge market opportunity.A whopping 91 percent of cyber attacks and the resulting data breaches begin with a spearphishing email, according to numerous sources. KnowBe4 states that this conclusively shows\u00a0end users really are the weak link in IT security.A growing percentage of phishing emails, when clicked by users, inject ransomware into computers and mobile devices.Further, global ransomware damage costs are predicted to exceed $5 billion in 2017, up from $325 million in 2015 \u2014\u00a015x in just two years. And the impact is expected to worsen, especially for healthcare organizations, which have been attacked the most and may see ransomware attacks quadruple by 2020.The human attack surface is growing exponentially year over year at a time when people have moved ahead of machines as the primary targets for hackers. There are 3.8 billion internet users in 2017 (51 percent of the world\u2019s population of 7 billion), which is up from 2 billion in 2015.Cybersecurity Ventures predicts there will be 6 billion internet users by 2022 (75 percent of the projected world population of 8 billion) \u2014 and more than 7.5 billion internet users by 2030 (90 percent of the projected world population of 8.5 billion, 6 years of age and older).The total addressable market \u2014\u00a0or T.A.M. as venture capitalists call it \u2014\u00a0for the security awareness training market is exploding. One report predicts the market for training employees on how to detect and defend against spearphishing emails, ransomware attacks and other cyber threats will reach $10 billion by 2027, up from $1 billion in 2014.Goldman Sachs: KnowBe4 platform is a must-have\u201cKnowBe4 has separated itself as a leader in the cybersecurity awareness training market, with their platform becoming a 'need to have' for businesses across sectors and geographies in the fight against cyber threats,\u201d said Hans Sherman, a vice president in Goldman Sachs\u2019 Merchant Banking Division who will join the KnowBe4 board of directors in connection with the investment.Institutional investors and VC firms may view the Goldman Sachs investment as a call to action. There\u2019s a solid lineup of security awareness training companies\u00a0\u2014 each bringing their own unique programs and tools to turn employees into cyber defenders.If there\u2019s one thing for sure, it\u2019s that a whole lotta employees need to be trained on security. The security awareness market will be an interesting one to watch.Visit\u00a0SteveOnCyber.com\u00a0to read all of my blogs and articles covering cybersecurity.Follow me on Twitter\u00a0@CybersecuritySF, or connect with me on\u00a0LinkedIn. Send story tips, feedback and suggestions to me\u00a0here.