The Tel Aviv AI Security Startup You Need to Know About This Month

Nullify Security, a three-year-old cybersecurity firm headquartered on Rothschild Boulevard in central Tel Aviv, closed a $47 million Series B round on June 30, drawing backing from Jerusalem Venture Partners and a strategic stake from Elbit Systems. The raise is the largest in the autonomous-threat-detection segment from an Israeli startup so far in 2026 — and it arrives at a moment when the global appetite for AI-driven defence infrastructure has rarely been more acute.

The timing is not accidental. With Europe's security architecture under sustained pressure — Poland's government issued stark warnings this week about the months ahead, and Russian logistical strains are mounting — defence ministries across NATO are accelerating procurement of systems that can identify intrusion patterns faster than human analysts can read them. Tel Aviv's tech corridor, long the world's second-largest cybersecurity cluster after Silicon Valley, is positioned squarely in the middle of those procurement conversations.

What Nullify Actually Does — and Why the Rothschild Corridor Is Watching

The company's core product, a platform called Sentry-X, deploys reinforcement-learning models that continuously map network behaviour inside critical infrastructure environments — power grids, water utilities, defence contractor systems — and flag anomalies in under 340 milliseconds, according to figures the company filed with the Israel Innovation Authority in May. That latency figure matters: the industry benchmark for legacy SIEM tools sits closer to four to six seconds, long enough for a sophisticated intrusion to do serious damage.

Nullify's engineering team, about 90 people spread across an office at the Azrieli Sarona Tower and a satellite lab in the Florentin neighbourhood, has been running pilots since January with two unnamed European government agencies. The company expects those pilots to convert to full contracts before Q4. The Israel National Cyber Directorate, based in Beer Sheva's CyberSpark campus, has also reportedly been in discussions about a domestic deployment framework, though no agreement has been signed.

For anyone working in and around Tel Aviv's startup ecosystem — from the accelerators lining HaArba'a Street to the venture funds clustered near the old Reading power station — Nullify represents a broader structural shift. The city's defence-tech founders are increasingly building not for the Israeli Defence Forces as a primary customer but for NATO-adjacent government buyers who want proven technology with a credible international track record. That pivot changes the product roadmap, the compliance burden and the fundraising story all at once.

What Happens Next, and What It Means for Local Founders

Nullify plans to use the Series B capital to double its sales team in Western Europe by December and to open a formal office in Warsaw — a city that, given the current security climate on the continent's eastern flank, has become a logical bridgehead for Israeli defence-tech companies seeking European government contracts.

The company is also hiring 30 additional engineers locally. Roles are posted through the Israeli tech jobs board Jobmaster and on the company's own site, with salaries ranging from 35,000 to 55,000 shekels per month for senior machine-learning positions — competitive for Tel Aviv but below what the largest multinationals, including Google's R&D centre in the city, are currently offering.

For founders and product managers elsewhere in the ecosystem, the Nullify raise signals something specific: defence-adjacent AI is attracting serious capital in 2026, but investors are demanding demonstrated latency benchmarks and regulatory readiness before term sheets materialise. Simply claiming AI-powered security is no longer sufficient. Jerusalem Venture Partners, which led the round, has publicly said it will prioritise companies that can show measurable technical differentiation in government RFP processes — not just impressive demo environments.

Watch for Nullify's presence at the Cybertech Global conference, scheduled to return to the Tel Aviv Convention Center on HaYarkon Street in October. That will be the first major public test of whether a $47 million raise can translate into the kind of enterprise pipeline that justifies it.