By Rupert Hargreaves Cybersecurity group Darktrace has reported a 27.4 per cent jump in revenue for the first half of its financial year. For the six months to the end of December, the company recorded revenue of $330.3m (£259m) and a gross profit margin of 89.3 per cent. The group’s earnings before interest, taxes, depreciation, and amortisation (EBITDA) jumped 87 per cent to $84.5m (£66.3m). The company said its higher income represented “a change in trajectory following a period of transformation and stabilisation.” The group has focused heavily on expanding its presence and capitalising on…