Coronavirus: Zoom is in everyone's living room - how safe is it?

Zoom, the video-conferencing app that has seen a huge rise in downloads since quarantines were imposed around the world, is now being used by millions for work and social gatherings.

This week Prime Minister Boris Johnson tweeted a picture of himself chairing a Cabinet meeting via the app.

This led to questions about how secure it was for government meetings.

Zoom has angrily defended its security record, saying it would answer any questions the government had.