The company that later promised to spot attackers hiding in quiet networks was itself born inside someone else's company. Darktrace was founded in 2013 at Invoke Capital, owned by Mike Lynch, and many of its early managers came straight from Autonomy, Lynch's software firm: Poppy Gustafsson, Jack Stockdale, Nicole Eagan among them.
That is the hidden thread. It was not a garage story. It began with mathematicians and cyber-defence specialists in Cambridge, backed by a patron who could open doors, and with a team that already knew how to build and sell enterprise software.
Its Antigena product could respond on its own, and a visual tool showed activity as it happened.
Their idea was unusual. Instead of keeping a list of known threats, Darktrace used unsupervised machine learning to learn the normal pattern of life of each network, device and user. Anything that behaved oddly stood out. Its Antigena product could respond on its own, and a visual tool showed activity as it happened. The company says it can catch zero-day attacks such as Log4j.
Becoming known took visibility. It struck a partnership with McLaren Racing in 2020 and extended it in 2021. In April 2021 it listed on the London Stock Exchange at about £2.5 billion, and within months the value neared £7 billion.
Then came the price. In January 2023 the New York hedge fund Quintessential Capital alleged accounting errors, especially in contracts from before the listing. Darktrace disputed it. By July an EY review found a small number of errors and inconsistencies, none material. The share price never regained its high.
In April 2024 Thoma Bravo offered $5.3 billion. The deal completed on 1 October 2024, ending the listing. Gustafsson stepped down as chief executive in September 2024, and Jill Popelka's successor Ed Jennings took over in March 2026 after her 16 months. The last public year, 2023, showed revenue of $545.4 million and net income of $59.0 million.
For a first-time founder, the lesson is about borrowed strength. Darktrace's start was helped by an experienced network, and its trouble came when public scrutiny hit a young story. Being well introduced opens the door; it does not answer the questions asked inside.