Greg Day is a highly experienced and recognized cybersecurity leader, currently serving as VP & Global Field CISO at Cybereason. With over 25 years in the industry, he has held prominent roles, including VP and CSO, EMEA at Palo Alto Networks and various strategic positions at McAfee. Greg is known for his deep understanding of the evolving threat landscape, cyber risk management, and security strategy. He is a frequent keynote speaker at global industry events, a trusted commentator on cybersecurity trends for international media, and is passionate about helping organizations build resilient security postures and navigate the complexities of modern cyber threats.
Greg Day's work history includes a series of influential roles in various companies. Here is a detailed list of his professional journey:
As VP & Global Field CISO at Cybereason, he provides strategic counsel to C-suite executives and boards worldwide, helping them understand and mitigate complex cyber risks and build effective defense strategies against sophisticated attacks.
During his tenure as VP and CSO, EMEA for Palo Alto Networks, Greg was instrumental in shaping cybersecurity dialogues across the region, advocating for proactive security measures, and guiding organizations towards adopting next-generation security architectures.
Consistently recognized as a leading expert and commentator in the cybersecurity field, frequently contributing to major publications, industry reports, and speaking at premier global conferences on topics such as threat intelligence, cyber resilience, and the future of cyber warfare.
With a career spanning over two decades, including significant roles at McAfee, Greg has consistently worked at the forefront of cybersecurity, contributing to the evolution of security practices and technologies to combat emerging threats.
Heidelberg University - Year 2007
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