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11 Cybersecurity Influencers to Follow on Twitter in 2022

Forecasted to reach $5 trillion in sales, the global technology market with cybersecurity investing included is bustling. In fact, by the year 2026, the market for cybersecurity investments is expected to be a $345.4 billion industry.

Even if you’re a seasoned investor, the cybersecurity world is evolving at a rapid pace. You want to keep abreast of what’s happening before you put your money into an investment.

Lucky for you, there are many people who specialize in the world of cybersecurity and share their wealth of knowledge.

Like an Instagram influencer who shares their knowledge of clothing or makeup, these people share their expertise, knowledge, and market information with those who follow them.

Want to learn who you should follow to get more information on cybersecurity investing? Read on to learn more about these well-known cybersecurity influencers.

1. Brian Krebs

Brian Krebs is a former Washington Post reporter who came into the world of cybersecurity by necessity. He found himself locked out of his computer by a malicious software program.

This forced him to not only figure it out but to become a leading expert in the world of cybercrime. He’s authored the New York Times bestseller Spam Nation.

Visit his blog at to read his blog. He’s now considered a leading expert on cybersecurity.

Follow him on Twitter @briankrebs.

2. Chris Krebs

Having the claim to fame as the first Director of the Cybersecurity and Infrastructure Security Agency (CISA) in the United States Depart of Homeland Security gives Christopher Krebs some insight into the world of cybersecurity.

Now, Krebs is regarded as an expert in the cybersecurity world. He is frequently speaking as conferences as the keynote speaker. He’s recently spoken at the:

  • RSA Conference
  • Cybersummit
  • SANS Cyber Threat Intelligence Summit

Krebs is most recently known for his tangle in the follow-up to the 2020 election. In his role as the Director of the Cybersecurity and Infrastructure Security Agency, he was responsible for securing the presidential election.

Donald Trump asserted the CISA computers switched votes from him to Joe Biden. Krebs responded that not only, but dozens of other security experts agreed that allegations of fraud were wrong and unsubstantiated.

Now, Krebs along with former Facebook CISO Alex Stamos formed their own private cybersecurity consulting firm called Krebs Stamos Group. They were quick to land their first big client SolarWinds.

Follow him on Twitter C_C_krebs.

3. Mikko Hypponen

Mikko Hypponen is widely recognized as one of the premiere leaders in the cybersecurity industry.  Currently, Hypponen acts as the Chief Research Officer at  F-Secure, a global security solution leader.

He has published works on cybersecurity at:

  • New York Times
  • Wired
  • Scientific American
  • MIT Technology Review
  • Technology Innovation Management Review
  • Le Monde

He’s also been a guest lecturer at  Stanford, Oxford, and Cambridge.

He’s highly regarded by his peers in the industry, being named one of the 50 most important people on the web by the PC World magazine. He has also been included on the list FP Global 100 Thinkers list.

Hypponen is considered a global leader and expert on computer security and privacy issues.

Follow him on Twitter @mikko.

4. Troy Hunt

As the creator of Have I Been Pwned? (, Troy Hunt is sought after for his expertise. The work he’s done at  Have I Been Pwned? has given him global regard.

Have I Been Pwned? works to evaluate your email to tell you if your email address or password are compromised. He also offers solutions to address the threat your email is facing.

Hunt also works as a Microsoft Regional Director and has been named the Most Valuable Professional awardee for Developer Security.

He created his Have I Been Pwned? site with two purposes in mind. First, it provided a much-needed service for consumers since data breaches are so rampant.

Because remaining current in the world of technology mattered to Hunt, working on the site gave him the opportunity to keep his own skills up-to-date.

Follow him on Twitter @troyhunt.

5. Marcus J. Carey

Marcus Carey is renowned in the world of cybersecurity and is best known for creating Tribe of Hackers, a best-selling cybersecurity book series.

He’s also a cybersecurity advocate who is known for his work protecting government data and working to keep the Internet safe.

His first came into the world of cybersecurity while he was in the U.S. Navy and was trained as a  cryptographer.

He’s also been vocal and regarded too for his work at addressing anti-racism in the tech industry.

He continues to work in the world of cybersecurity addressing penetration testing, incident response, and digital forensics for multiple government agencies.

He was recently published in Security Magazine where he discusses the importance of using sales best practices to handle ransomware attacks.

Follow him on Twitter @marcusjcarey.

6. Graham Cluley

Graham Cluley is a British-born security blogger who is regarded as one of the most regarded in the world of cybersecurity.

Cluley is the host of the popular podcast called @SmashinSecurity. The show invites guests from around the globe who are experts in the world of cybersecurity.

The podcast has had over 5 million downloads. It’s been named the Best Security Podcast multiple times by the prestigious Security Blogger Awards held in London.

He also publishes his blog called Nake Security which has won many awards in the cybersecurity world.

Follow him on Twitter @gcluley.

7. Dave DeWalt

Dave DeWalt is the founder and managing director of NightDragon which is known because it recently invested in multi-cloud security startup vArmour.

The pandemic brought on a profound recognition and need for better protection from ransomware and cybersecurity needs.

DeWalt has spoken about the current technology and cybersecurity aggressive threat landscape in history. He actively advocates helping commercial and government agencies to fight these risks.

Investors obviously agreed with their $11.5 billion in total cybersecurity venture capital financing into cybersecurity startups.

Follow NightDragon and Dave DeWalt on Twitter @nightdragon.

8. Bruce Schneier

The Economist calls Bruce Schneier the security guru and is regarded as one of the most influential cybersecurity experts around the globe.

He has written many books on cybersecurity with his most known book being Data and Goliath and Click Here to Kill Everybody. He’s also published many times on other platforms.

His latest book called We Have Root is a collection of essays that address cybersecurity topics, privacy, the role of technology in national security, elections, transportation, war, and the Internet of Things.

Other accolades and roles in the cybersecurity world include:

  • Guest on television and radio
  • Served on several government committees
  • Fellow at the Berkman Klein Center for Internet & Society at Harvard University
  • Lecturer in Public Policy at the Harvard Kennedy School
  • Board member of the Electronic Frontier Foundation and AccessNow
  • Advisory Board Member of the Electronic Privacy Information Center and

He publishes his own newsletter called Crypto-Gram and a blog called Schneier on Security. He also acts as the Chief of Security Architecture at Inrupt, Inc.

Follow him on Twitter at @schneierblog.

9. Lesley Carhart

Acting as the Principal Industrial Incident Responder at Dragos, an industrial cybersecurity company, Lesley Carhart is widely regarded as an expert in the field of cybersecurity incident response and digital forensics.

Her area of expertise is digital forensics and she’s been recognized as DEF CON Hacker of the Year. She was also named a “Top Woman in Cybersecurity” from CyberScoop.

Carhart has spent her illustrious IT career in cybersecurity specializing in information security focusing on response to nation-state adversary attacks.

You can also watch for Carhart’s prolific tweeting especially as it relates to infosec.

Follow her on Twitter @hacks4pancakes.

10. Dr. Magda Chelly

Dr. Magda Chelly is regarded as one of the most influential women in cybersecurity. She has done extensive research and published writing in many places including:

  • IEEE
  • RSA Conference
  • World Congress on Internet Security

Chelly acts as the managing director of Responsible Cyber Pte. She is also highly recognized as an expert keynote speaker, presenter, moderator, and researcher.

Corporations seek her out to advise on both CISO and to act as a consultant for cybersecurity issues.

Follow her on Twitter @m49D4ch3lly.

11. Robert Herjavec

Acting as more than just a shark on the popular TV show Shark Tank, Robert Herjavec is highly regarded in the cybersecurity world and regarded as a leading influencer in the industry.

As a global leader in cybersecurity operations, Herjavec is the Founder and CEO of Herjavec Group.

Other roles of importance include:

  • Cybersecurity Advisor for the Government of Canada
  • White House Summit on Cybersecurity
  • Member of the US Chamber of Commerce Task Force for Cybersecurity

Practicing what he preaches on Shark Tank, he has built up and sold several IT companies including a Canadian integrator of Internet security software which he sold to AT&T Canada for many millions.

Follow him on Twitter at @robertherjavec.

For More on Cybersecurity Investing, Follow These Cybersecurity Influencers Today

The world of cybersecurity has a wealth of investment opportunities just waiting to be discovered. Use the knowledge of these cybersecurity influencers to help you make wise cybersecurity investing decisions.

To learn more about whitespaces, the underserved and underinvested frontiers and cybersecurity investing, contact us today.


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