Mimecast, a global cybersecurity leader redefining how organizations secure human risk through precision-engineered AI, today announced that Leslie Nielsen has joined the company as Chief Information Security Officer (CISO).
Nielsen, a 25+ year cybersecurity veteran, joins Mimecast from Klaviyo, a high-growth marketing automation platform, where he served as SVP and CISO. At Klaviyo, he played a critical role in scaling the company to $1.3B in revenue, fortifying its defenses, and leading its security function through IPO readiness, positioning the organization to meet the rigorous demands of the public markets.
“We sought out a leader who can see beyond the noise and hype to deliver an innovative security platform, and Leslie fit the bill perfectly,” said Mimecast CEO Marc van Zadelhoff. “I’m excited to welcome him to the Mimecast team and for the expertise he brings in scaling world-class cybersecurity at a time when digital threats are increasingly complex. Leslie’s proven experience leading security teams will be invaluable to safeguarding our customers and strengthening our resilience strategy.”
As CISO, Nielsen will spearhead Mimecast’s global cybersecurity initiatives, driving threat intelligence, risk assessment, and incident response, while ensuring regulatory compliance. His leadership reinforces Mimecast’s commitment to delivering the highest levels of protection for more than 42,000 global customers.
“I’m thrilled to join Mimecast on their mission to secure the human layer in the new age of AI-powered security threats,” said Nielsen. “The industry is at a pivotal point where defense strategies must place humans at the center, and Mimecast has long been at the forefront of human-focused security. I look forward to building on the company’s strong foundation and helping shape its next chapter of innovation and resilience.”
Prior to Klaviyo, Nielsen held SVP and CISO roles at Nuance Communications, SAP Concur, and SuccessFactors, as well as the CTO role at SOS Security, alongside senior positions at IBM and ACS (acquired by Xerox). He also served on Google’s CISO Cloud Advisory Board and earned a Bachelor of Science in Computer Science from Texas Tech University.
READ MORE TECH AND BUSINESS NEWS.
