Pearson is facing a class action lawsuit in the US after 13,000 of its school and university student accounts were accessed by hackers.
A court filing claims one million students were affected by the data breach and the company did not have adequate safeguards in place.
It also accuses Pearson of not spotting the November 2018 breach for around four months, before the FBI informed it in March this year.
Falanx Group Ltd (LON:FLX), through its subsidiaries, provides cyber defence and intelligence services to blue chip and government clients worldwide. It operates through Falanx Cyber Defence and Falanx Intelligence divisions.