Ellison Anne Williams and the value of a hidden question

Ellison Anne Williams had a reasonable objection to the personal-profile business. Once you tell a reporter something, it tends to remain told. “Things go in writing and they can’t be taken back,” she observed in 2018. She declined to disclose her age and offered little detail about her activities outside work. For someone selling a way to keep sensitive information private, this was an unusually convincing product demonstration.

She was much happier discussing what she was building. Williams had left the National Security Agency to start Enveil, a company whose name compresses “encrypted veil.” Its premise was that a question can be as sensitive as an answer. A financial analyst researching a possible acquisition, for example, may reveal something valuable simply by asking about the target. The search itself can give the game away.

Williams wanted organizations to be able to ask those questions, compare information and extract insights while keeping the sensitive operation protected. Her route to that business ran through pure mathematics, distributed computing and a dozen years of government work. The ambition to own a company, however, had arrived well before the cryptography.

The family business was building things

Williams grew up with entrepreneurship close at hand. Her father and grandparents ran businesses, including in real estate development. She has described that upbringing as an education in creating something where there had previously been an opportunity. A building on an underused lot and a piece of software might seem distant cousins. To her, both involved recognizing a problem and making something that could solve it.

There was an early rehearsal: a cake business in high school, which she later discussed in a podcast about entrepreneurship. The later company would have a more demanding explanation than cake. Still, the wish to run a business remained steady even as her academic interests took her somewhere few childhood business plans would think to look.

At Columbia College, she studied mathematics and French, graduating with honors in December 1999. A mathematics master’s at the University of South Carolina followed in 2001. Her doctorate at North Carolina State concerned algebraic combinatorics; its title was A Formula for N-Row Macdonald Polynomials. She also earned a computer science master’s at Nova Southeastern University, with a focus on machine learning.

The subjects mattered because Williams enjoyed the work, rather than because she had already plotted a future encryption company. That distinction gives her career its slightly wandering shape. She followed interesting problems into graduate study, and graduate study into intelligence. The entrepreneurial intention stayed with her while its eventual subject was still taking form.

A classified apprenticeship

In government, Williams worked on large-scale analytics, information security and the coordination of computation across many machines. Distributed computing posed a practical mathematical puzzle: how do you take work that runs on one machine and arrange for hundreds or thousands to carry it out together? It required both abstraction and attention to what computers could actually accomplish.

Her career included the NSA and the Johns Hopkins University Applied Physics Laboratory. The eventual move into a startup grew out of that technical environment. Williams encountered homomorphic encryption, a way to perform computation on encrypted information. The underlying field had a long research history. Making selected operations sufficiently efficient and usable for customers was a different undertaking.

Ryan Carr, now Enveil’s chief technology officer, worked with her at the Applied Physics Laboratory. He later recalled her efforts to get some of the research released and the invitation that followed. The recruitment email was admirably economical.

“Want to come start a company?”

Williams’s invitation, recalled by Ryan Carr

Carr agreed. His account offers a useful glimpse of the founder before the job title: someone whose work had earned enough trust for a colleague to leave an established institution and join a young company. Williams founded Enveil in 2016. Commercializing the technology involved a formal government transfer process, including reviews of what could be released. Leaving government did not mean leaving paperwork behind.

The question has a price, too

To understand Williams’s commercial argument, imagine a bank examining a suspicious transaction. Useful clues may sit inside other institutions, or in another jurisdiction. Bringing everything into one central database can create problems of ownership, secrecy and permission. Yet leaving each institution to examine only its own fragment limits what anyone can see.

Enveil’s approach protects the content of searches, analytics or machine learning models, along with their corresponding results, during processing. Its software allows organizations to work with data where it already resides. The point is to obtain a useful insight while limiting the sensitive information exposed in obtaining it.

This requires some precision. Data stored in a database, data moving across a network and data undergoing computation are different security situations. Williams built the company around that third situation, usually called data in use. Protecting it complements the tools that secure storage and transmission. It does not relieve anyone of the need to secure those other stages.

There is an appealing tension here. Williams came from a world organized around keeping information close. Her company exists to make more information usable across boundaries. The boundaries still matter. A workable product has to respect them well enough that people will agree to collaborate in the first place.

Then comes the explanation

A mathematician can establish that an operation is possible and still have a great deal of selling left to do. Williams has repeatedly described customer education as part of the job. Early audiences often needed to understand why processing created a privacy problem before they could assess a way to address it. An elegant technical answer is difficult to sell when the customer has yet to recognize the question.

She also stays involved in product development and the roadmap. In a 2020 description of her working day, she talked about dividing time among her team, customers and possible future applications, while keeping a connection to the technology. She enjoyed the absence of a typical day. The role gave her both the mathematics and the business she had wanted, with a calendar unlikely to respect either discipline.

Her criticism of industry jargon is practical. In 2023, she pointed to teams discussing machine learning without sharing a definition of what they meant. When security questions cross departments, vocabulary becomes part of the work. Getting engineers, commercial teams and decision makers to understand the same thing can determine whether an idea moves beyond a meeting.

By April 2022, Enveil had announced a $25 million Series B led by USAA, bringing disclosed funding to more than $40 million. Other investors included Mastercard, Capital One Ventures and Bloomberg Beta. The company reported revenue growth of more than 300 percent since its Series A. Those figures describe a particular stage of the business, rather than a standing forecast. They also show how far Williams had traveled from explaining an unfamiliar concept to asking institutions to finance its deployment.

The founder beyond the labels

Williams’s discretion has another dimension. When she first founded Enveil, she deliberately avoided discussing her five children with investors because she feared assumptions about whether a mother could run a business. She later spoke publicly about that choice and the bias behind it. The measure she wanted applied was her ability to build and lead the company.

That account gives her privacy instinct a human setting. Disclosure can change how someone is judged, even when the disclosed detail says little about their competence. Williams was making a calculation about how to present herself in a competitive fundraising environment. Her later willingness to describe the calculation made the problem visible to other founders.

She has also been direct about needing help. Tim Eades, an Enveil board member, has been a mentor she could call outside office hours. She has credited other founders and CEOs with providing guidance that comes from having carried similar responsibilities. Her early pitch materials, meanwhile, became something she could look back on with a wince. Apparently even a cryptographer cannot encrypt an old slide deck away from her own memory.

A longer orbit

By 2025, the possible applications included space. Williams discussed the difficulty of using information across civilian, military and commercial space assets, and Enveil’s work with the Defense Innovation Unit. She admitted that, at the company’s beginning, she would have laughed at the suggestion that it would end up in that domain. Customers had carried the original idea into a setting she had not planned.

The September 2026 launch of Enveil Orbit extended the collaboration theme. The platform is designed to support encrypted searches and analytics across distributed data without requiring organizations to consolidate their assets. Earlier that month, Enveil announced Carahsoft as its public sector distributor, adding routes through which government customers could obtain the software. Williams’s company now had to solve the ordinary commercial problem of making a specialized product easier to buy.

That is a fitting destination for this stage of her story: an abstract mathematical capability acquiring a product name, a distribution agreement and a place in somebody’s working day. Williams had wanted to build a company since childhood. She found her material in the question people hesitate to ask aloud, and has spent the years since making it possible to ask anyway.