WhatsApp, the encrypted communications service used by both human rights activists and senior adviser Jared Kushner, has repaired a flaw that allowed an Israeli firm’s spyware to infect devices with a simple phone call, even if users didn’t answer.

The vulnerability, discovered earlier this month, is likely to increase scrutiny of data security at the White House, as well as at parent company Facebook, the social media giant questioned by Congress after the exposure of information on some 87 million users to Cambridge Analytica, a consultant on President Trump’s 2016 campaign.