What the business is
Hilt sells real-time data-activity monitoring that sits at the operating-system kernel, builds behavioral baselines, and flags or quarantines unusual data movement.
The bet
That breach detection can run at the OS kernel and stream to graph neural networks, flagging and stopping data theft in real time without slowing systems.
Starting capital
$4.7M total: $500K pre-seed led by Pear VC (Oct 2025) and $4.2M seed led by Array Ventures (Oct 2026).
How it started
William Cielen — a magician's son who grew up on cruise ships and in Las Vegas, trained in ballet in Montreal, skipped two grades and started college at 15 — met venture investors at a Waterloo hackathon and the same week dropped out of school, quit an algorithmic trading internship at the National Bank of Canada and flew to San Francisco to start Hilt.
What happened
In January 2026 the CTO of a large hedge fund described the security problem in its microsecond trading systems; the fund offered a potential $1–2M contract and paid six figures upfront before Hilt had built the solution, Cielen said. Two high-frequency trading firms now run the product, and customer count doubled in the month after a concerted sales push, he said — total count undisclosed. The 11-person team moved from San Francisco to Chattanooga, Tennessee, with investor Brickyard.
What has to be true
Security tools usually watch content or add latency; Hilt watches how data moves from the kernel, the one place nothing can hide from.
High-frequency trading was the wedge: any product that slows systems is disqualified there, so winning meant proving zero-latency detection.
The first customer pre-paid six figures before the product existed, financing development and validating demand (founder-stated).
Running entirely inside customer infrastructure keeps sensitive data in-house — the hard requirement for banks and government buyers.
What can be applied
Sell where your constraint is the product's strength: in microsecond trading, 'no added latency' is a capability incumbents structurally cannot offer.
Aftermath
As of the Oct 7, 2026 report, Hilt planned to spend the seed primarily on hiring and building market presence, was working with the original hedge fund and a second high-frequency trading firm, and was fielding interest from neobanks and healthcare businesses. Verdict Capital's Niko Bonatsos framed the durability: most security tools look at content — 'Hilt looks at how data moves, at the kernel, which is the one place you can't hide from.'
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