In letter, top officials urge social media giant to build backdoor to ensure law enforcement will be able to see content if need arises

Herzliyah-based company reportedly tells buyers its tech is able to obtain all of an individual’s info from media giants' servers; company denies the claim

Day-long problem also affects its Instagram and WhatsApp services around the world before being resolved

Owners say Herzliya-based company, whose spyware has allegedly been used by repressive regimes, will seek greater transparency, align itself with UN guiding principles on rights

Facebook subsidiary urges users to download latest version of app after NSO Group reported to have been behind breach

'Someone has to be quite desperate to target a lawyer, and to use the technology that is the very subject of the lawsuit,' says attorney involved in case against the NSO Group

Facebook subsidiary patches 'very scary vulnerability' that infected phones via missed WhatsApp calls alone

Chris Hughes warns of platform's clot, says CEO's 'focus on growth led him to sacrifice security and civility for clicks'