Twitter is being accused of putting efforts to get more people to sign up, ahead of security.
A whistleblower is alleging the platform misled regulators about how it handles hackers and spam accounts - with bosses able to get bonuses for new sign-ups.
The social media giant has been accused of making misrepresentations to the Irish Data Protection Commission and other regulators by the company's former head of security Peiter 'Mudge' Zatko.
Twitter is calling the complaint a 'false narrative'.
