WhatsApp makes changes to group chat

Users can now leave a group perman­ently to avoid being repeat­edly added back

• WhatsApp co-founder to quit in loss of privacy advocate at Facebook

  Jan Koum’s plan to exit comes after clashing with parent company which intends to weaken Whatsapp's encryption

• WhatsApp raises minimum age in Europe to 16

  To help it comply with new data privacy rules coming into force next month

• Drug dealer caught using fingerprint scan on WhatsApp image

  These are believed to be the first convictions in Wales from fingerprints taken from a photograph