Neo raises $100 million to hunt the zombie AI agents haunting your company

Neo emerged from stealth with a $100 million seed and Series A investment from Andreessen Horowitz and Bessemer Venture Partners to secure AI agents that companies have lost track of. CEO Nick Warner says most organizations are blind to the proliferation of agentic software that can resurrect itself, reconfigure permissions, and recruit other systems. Neo's endpoint sensor inventories, assesses configurations, and enforces policies on AI tools, a combination Warner claims is the first of its kind.

I was tardy to my own interview, but my AI notetaker was right on time. It captured Neo CEO and co-founder Nick Warner describing a call he’d been on a few weeks earlier. Three people were on it, along with about seven AI notetakers that had joined the meeting as well. Warner’s co-founder Shlomi Salem has three of his own notetakers and often starts meetings by disabling them while one keeps trying to resurrect itself. “Just racking up tokens,” Warner quipped. It’s a fitting scene to describe Neo, which emerged from stealth this week with a $100 million seed and Series A investment, with backing from Andreessen Horowitz and Bessemer Venture Partners. Every notetaker that joins a meeting traces back to a reasonably sensible individual choice to keep a credible set of notes in an endless sea of meetings. The trouble starts afterward. The tools you once approved to keep tabs on your appointments now have agentic capabilities, and vendors keep adding bells and whistles. Eventually, the tools that were already cleared by a company for drafting meeting notes have morphed into a multi-pronged computer squid that can summarize points, draft follow-up emails, and recruit other systems to join it all with permission you granted back when it was far more restrained. That gap, between what you set up a year ago and what’s happening now and next year, is what Neo is hoping to secure. Warner says most companies can’t see into it at all. “It’s a communication channel, medium, and a dimension that customers around the world, large and small, are almost entirely blind to,” Warner said. “They’re fumbling in the dark.” Neo has built what Warner calls a full endpoint sensor, which, in layman’s terms, means software that sits on the machine where a person and an AI tool actually meet. Warner says Neo handles three critical tasks which include inventorying every piece of agentic software installed; assessing how each is configured; and, enforcing policies on what each is permitted to do. According to Warner, Neo is the first to combine all three into a single product. That thesis has drawn Andreessen Horowitz general partner Zane Lackey and Bessemer partner Elliott Robinson to take seats https://www.globenewswire.com/news-release/2026/07/20/3329638/0/en/neo-launches-with-100m-to-secure-ai-software-across-the-enterprise.html on Neo’s board, and brought investment from Craft and Merlin Ventures. The Neo approach breaks with the direction much of the security industry was moving a year ago, when the consensus was to guard a chokepoint, said Warner. Watch how AI tools talk and interact with other systems and you’ll guard everything. But Warner claims that approach is now obsolete because frontier models can directly call up tools, operate computers, and route themselves around monitored communication channels completely. And older defenses don’t transfer, said Warner, because they work by baselining normal behavior and flagging deviations. Software that can reason on its own doesn’t have a normal to measure against. For Warner, the issue was worth leaving his post as chief operating officer of SentinelOne, where he built the go-to-market organization and helped take the company public https://www.sentinelone.com/press/sentinelone-announces-launch-of-initial-public-offering/ in 2021. Warner’s fellow co-founder Salem–with the zombie notetaker–led detection engineering and threat research there for more than a decade. The third co-founder, Eran Shirazi, co-founded customer workflow AI firm EasySend and previously ran a vulnerability research group in Israel Defense Forces’ elite signal intelligence group, Unit 8200. The issue needed a “clean sheet redesign,” said Warner, and he claims it will be hard for larger security companies to keep up. He declined to share any financial metrics, but said Neo is already running in financial services, healthcare, insurance, and manufacturing companies. And in Warner’s view, success will be based on whether the cybersecurity community finds Neo stable, and easy to deploy and integrate with the tools a team already has at hand. If the business can do all that at once, it becomes a go-to-market strategy because at the end of the day, the cybersecurity industry unites against adversaries—and talks incessantly about tools they like to fight them. “We’re not just going to have customers, “ said Warner. “We’ll have fans.” See you Monday, Amanda Gerut Email: amanda.gerut@fortune.com mailto:amanda.gerut@fortune.com Submit a deal for the Term Sheet newsletter here mailto:termsheet@fortune.com . Joey Abrams curated the deals section of today’s newsletter. Subscribe here https://archive.ph/o/tzAhs/https://fortune.com/newsletters/term-sheet . VENTURE DEALS - Etched https://www.etched.com/ , a San Jose, Calif.-based developer of frontier inference clusters, raised $300 million in Series C funding. Sequoia led the round and was joined by a16z , Jane Street , Diffusion , and SK Hynix . - Andrenam https://www.andrenam.com/ , a Los Angeles, Calif.-based defense technology company, raised $18 million in Series A funding. Upfront Ventures led the round and was joined by Valor Equity Partners , Also Capital , and First Round Capital . - Cast Insights https://ephemeralintel.com/ , a San Francisco-based developer of an AI-powered transcription platform, raised $4.5 million in pre-seed funding. Abstract Ventures led the round and was joined by HF0 , Village Global , Max Ventures , Embassy Ventures , Stratus Ventures , and others. - Coverwatch https://coverwatch.com/ , a San Francisco-based insurance brokerage designed for modern businesses, raised $4.5 million in pre-seed funding. CoFound and Restive led the round and were joined by KFund , Liquid2 Ventures , and others. - imagi https://imagilabs.com/ , a New York City-based education layer between AI tools and K-12 schools, raised $4.5 million in seed funding. Brighteye Ventures and Day One Capital led the round. PRIVATE EQUITY - Arax agreed to acquire Transcend Capital Advisors https://www.transcendcapital.com/ , a Madison, N.J.-based registered investment advisory. Financial terms were not disclosed. - Bregal Sagemount agreed to acquire a majority stake in ATOZ Services https://www.atoz-services.lu/ , a Luxembourg-based fund services company. Financial terms were not disclosed. - GA Group , backed by Oaktree Capital Management , acquired Trampe Settles https://trampesettles.com/ , a Dallas, Texas-based family law litigation support firm. Financial terms were not disclosed. - Valeas Capital Partners agreed to acquire a majority stake in My Pension Expert https://mypensionexpert.com/ , a Doncaster, U.K.-based retirement advisor, from Palatine Private Equity . Financial terms were not disclosed. EXITS - Vesterra Capital Partners acquired PHFM https://www.phfmservices.com/ , a Columbus, Ohio-based facilities maintenance platform, from Powerhouse Services , a portfolio company of Lincolnshire Management . Financial terms were not disclosed. FUNDS + FUNDS OF FUNDS - Francisco Partners https://www.franciscopartners.com/ , a San Francisco-based investment firm, raised $21 billion across its eighth flagship fund and fourth Agility fund focused on tech companies. - Levine Leichtman Capital Partners https://www.llcp.com/ , a Los Angeles-based private equity firm, raised $2 billion for its fourth fund focused on business services, education and training, and other sectors. Subscribe to Fortune Gulf Brief . Every Tuesday, this new newsletter delivers clear-eyed, authoritative intelligence on the deals, decisions, policies, and power shifts shaping one of the world’s most consequential regions, written for the people who need to act on it.