
Karissa Breen, more commonly known as KB, is crowned a LinkedIn ‘Top Voice in Technology’, and widely recognised across the global cybersecurity industry. A serial entrepreneur, she is the co-founder of the TMFE Group, a portfolio of cybersecurity-focused businesses spanning an industry-leading media platform, a specialist marketing agency, a content production studio, and the executive headhunting firm, MercSec.
Now based in the United States, KB oversees US editorial operations and leads the expansion of the group’s media footprint across North America, while maintaining a strong presence in Australia, and the broader global market.
She is the former Producer and Host of the streaming show 2Fa.tv, and currently sits at the helm of journalism for the group’s flagship arm, KBI.Media, the independent cybersecurity media company.
As a cybersecurity investigative journalist, KB hosts her globally-renowned podcast, KBKast, where she interviews leading cybersecurity practitioners, CISOs, government officials including heads-of-state, and industry pioneers from around the world. The podcast has been downloaded in over 65 countries with more than 400,000 global downloads, influencing billions of dollars in cybersecurity budgets.
KB is known for asking the hard questions and extracting real, commercially relevant insights. Her approach provides an uncoloured, strategic lens on the evolving cybersecurity landscape, demystifying complex security issues and translating them into practical intelligence for executives navigating risk, regulation, and rapid technological change.



