Swift Cyber Defense of $8.8 Trillion – An Account of a CISO's 90 Days Transformational Journey
It was quite an autumn. Sam Evans, the Chief Information Security Officer (CISO) at Clearwater Analytics, found himself confronting the daunting task of protecting a whopping $8.8 trillion against a horde of cyber threats. The challenge was not for the faint-hearted, but for Evans, it was an opportunity to reveal the combination of advanced technology, sheer grit, and meticulous strategy, which forms the heart of modern-day cybersecurity.
Evans’ initial skepticism transformed into a robust defense strategy within 90 days, an impressive timeframe considering the monumental task and its potential repercussions. Handling gargantuan volumes of data is a massive responsibility, bearing a persistent shadow of possible inadvertent exposure from its own employees. The specter of an employee plugging secretive data into arbitrary AI models—away from the company’s purview—was looming, threatening the firm’s vast assets.
A central part of Evans’ strategy hinged upon fusing AI into the security foundation. AI reduced the searching and hunting done by analysts, taking on the preliminary analysis instead. It analyzed patterns, experiences, and probabilities, allowing the security team to focus more on strategic execution. Traditional extended detection and response (EDR) products began incorporating machine learning, drastically improving their threat detection efficiency.
Despite these advances, Evans was wary of the risks that came with AI — like the haunting fear of deepfakes. It’s incredibly unsettling to think one could potentially manipulate tech to mimic a CEO initiating covert wire transfers, all thanks to AI’s unmatched ability in resemblances. Yet, for Evans, the worst fear remained the uncontrolled exposure of customer data in an ungoverned AI engine.
Evans had to assert these risks to the board, alongside his plan to counteract them. Apart from emphasizing the potential perils, he provided a problem-solving approach, fostering the board’s confidence in him. Take, for example, his assessment of ChatGPT. While he acknowledged it as a potent productivity tool, he expressed concern about unchecked employee use, fearing the possibility of customer data or intellectual property exposure.
Through Evans’ transformation from ’that’s BS’ to bulletproof, we gain an invaluable peek into the sophisticated world of AI-fueled cybersecurity. It illustrates how fast-paced and nimble modern-day security needs to be, and how critical it is to remain constantly aware, agile, and prepared in the face of evolving threats.
- •$8.8 trillion protected: How one CISO went from ‘that’s BS’ to bulletproof in 90 days venturebeat.com12-07-2025