'Snake oil': doubts loom over tech firm Darktrace's high-octane sales strategy

Darktrace is a well-oiled sales and marketing machine, as slick and turbocharged as the multimillion-pound McLaren Formula One sponsorship deal it uses to entice prospective clients, and yet the cybersecurity company continues to be overshadowed by questions about its technology and founding investor. On the face of it, Darktrace is a great British tech success story. It was founded in Cambridge nine years ago by an alliance of mathematicians, former spies from GCHQ and artificial intelligence (AI) experts. Its market value hit almost £7bn within months of its stock market float last April as investors clamoured for a stake in the promise of a rare European superpower in the US-dominated cybersecurity space. And yet Darktrace has been on a rollercoaster journey since then.