Alayzain (Zain) Rizavi

Co-founder & CEO @ Cimento AI

📍 United States🔄 Updated September 2026💼 8 investments📅 5 years investing🗓 Last invested Nov 2024
VC🌍 United States
8
Total investments
4
Early stage
2
Mid stage
0
Late stage
5y
Years active

Portfolio

8 investments · sorted by recency
All investments
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Mid stage
Late stage
Investor and Board Observer
Nov 2024
The Platform for AI Security Prompt Security enables enterprises to benefit from the adoption of Generative AI while protecting from the full range of risks to their applications, employees and customers. At every touchpoint of Generative AI in an organization — from AI tools used by employees to GenAI integrations in customer-facing products — Prompt inspects each prompt and model response to prevent the exposure of sensitive data, block harmful content, and secure against GenAI-specific attacks. The solution also provides leadership of enterprises with complete visibility and governance over the AI tools used within their organization. Prompt empowers organizations to fully embrace Generative AI with confidence.
Investor
May 2023
Channel99 is a B2B performance marketing platform that unites marketing and finance teams to more effectively improve the value of marketing investment. By measuring the performance of vendors and channels driving high-quality website traffic, Channel99 helps B2B companies gain more meaningful and accurate insights into which investments reduce dollar inefficiencies, lower customer acquisition cost, and more predictably exceed sales pipeline numbers. Pioneering the next wave of B2B marketing, Channel99 provides the industry’s only solution for measuring the quality of the channels generating pipeline. Learn more at www.channel99.com
Investor
Feb 2022
Harmonic is the complete startup database. Used by hundreds of leading investors like Accel, Greylock, and Menlo, as well as GTM teams from the likes of Notion, Google, and Retool to find the best startups and founders. Open roles: https://harmonic.ai/careers
Investor and Board Observer
Jan 2022
Open Raven is a leader in automated multi-cloud data security. The Open Raven Data Security Platform works at cloud scale, is fully customizable, and enables organizations to gain 360-degree visibility into their cloud data so they can prevent attacks and data loss, eliminate unnecessary costs and risks, and streamline compliance.
Investor
Oct 2021
We believe everyone should have equitable access to affordable credit. Leveraging ML/AI powered customer onboarding, Yendo is the world’s first vehicle-secured, credit card. Yendo's product is 95% cheaper than the non-bank financial products that Americans spend $45bn on each year While $3T worth of vehicles are owned outright in the U.S., tens of millions of their owners are denied by traditional lenders. We are unlocking the value in those vehicles to provide sustainable credit for those that need it most.
Investor and Board Observer
Sep 2021
Presidio Identity is on a mission to eliminate identity and financial fraud, bringing trust and security to our digital interactions. We are obsessed with customer success, great user experience, the best of the best security, and constant improvement. Presidio Identity offers a digital-native approach that brings security, privacy, and simplicity to user authentication and digital interactions, eliminating identity theft, financial fraud, and bad user experiences. The company was founded in 2020 by Dennis Moore, Tommy Lau, and Joshua Moore, and is a fully remote, US-based company.
Investor and Board Observer
Jun 2021
At Macrometa, we enhance web and app performance with our AI-powered PhotonIQ platform and Global Data Network. With over 175 global edge locations, we optimize real-time content delivery, improve user experiences, and support instant scaling for businesses. Our solutions drive conversions and ensure speed and security for enterprises across industries like eCommerce, gaming, and finance.
Experience · 15 entries
All (15)
Investments (8)
Founder (3)
Board (4)
2025
Co-founder & CEO
May 2025
Cimento AI is the AI-native Human Risk Management platform that continuously scores how every employee — and every AI agent — behaves under attack, then automatically responds to reduce risk before it becomes a breach. Built by veterans of Cloudflare, Palo Alto Networks, Amazon, and Palantir. Backed by top pre-seed funds, including Bowery Capital and Indie.vc, alongside angels from Cloudflare, Okta, Palo Alto Networks, Cursor, Tenable, CrowdStrike, and Signal Sciences (Fastly). Advised by security and engineering leaders from Together AI, LinkedIn, dbt Labs, Yext, LVT, and CrowdStrike.
Co-founder & CEO
May 2025
TimelyAI is building a Marketing Saas for Time-based Businesses. “The idea is to solve the most burning need of our customers- Growing their clientele at an affordable price and being able to build lasting relationships with them for repeat business and referrals.” "Coming soon with something extremely crazy!"
Scout
May 2025
For five decades, Kleiner Perkins has partnered with intrepid founders to build iconic companies that made history. Today, Kleiner Perkins continues that legacy, investing in founders with bold ideas that span industries and continents, partnering with them from inception to IPO and beyond to maximize the potential of their ideas and make history across consumer, enterprise, health care, financial services, and hardtech. Our portfolio includes Google, Amazon, Figma, Glean, Harvey, Rippling, TogetherAI, OpenEvidence, Waymo, and Anthropic. For more information, visit http://www.kleinerperkins.com and follow us @kleinerperkins.
2024
Investor and Board Observer
Nov 2024
The Platform for AI Security Prompt Security enables enterprises to benefit from the adoption of Generative AI while protecting from the full range of risks to their applications, employees and customers. At every touchpoint of Generative AI in an organization — from AI tools used by employees to GenAI integrations in customer-facing products — Prompt inspects each prompt and model response to prevent the exposure of sensitive data, block harmful content, and secure against GenAI-specific attacks. The solution also provides leadership of enterprises with complete visibility and governance over the AI tools used within their organization. Prompt empowers organizations to fully embrace Generative AI with confidence.
Co-Founder
Mar 2024
Support the next generation of founders with the Cloudflare alumni network. Join our Discord community: https://discord.com/invite/xeSaGJeZTF Interested in becoming an LP? https://venture.angellist.com/orangecloudangels/syndicate Startups looking to connect? https://forms.gle/TmKgyEGmvh7CVkSN8 Disclaimers The establishment and management of this network have been conducted by Cloudflare alumni and it is not officially associated with Cloudflare, Inc. (NYSE: NET).
Show all 15 entries ↓
Investment activity
2021–2024 · 8 investments
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