The app was used to spread misinformation that helped elect far-right authoritarian Jair Bolsonaro. It still serves as a platform for radicalization.
WhatsApp said the security breach may have targeted human rights groups.
The nationwide social media blockage came after eight blasts swept through Sri Lankan churches and hotels on Easter Sunday, killing more than 200 people.
Alexandria Ocasio-Cortez and Trump's former presidential rival rip the White House adviser for hypocrisy.
Zuckerberg plans to stitch together its Messenger, WhatsApp and Instagram messaging services.
Jan Koum reportedly differed with WhatsApp's corporate parent over encryption and user privacy.
Facebook bought WhatsApp for $19 billion in 2014.
Or anyone, for that matter.
New media has created a battlefield that could alter the course of politics in the country.
By Eric Lifson The workplace landscape has changed. Social media has given everyone the access to more information than could
A group of professed Muslim radicals "had no basic knowledge about Islam,” according to a new study.
By Lily Hay Newman for WIRED. As end-to-end encrypted messaging apps have exploded in popularity, several well-known services