WhatsApp has launched a major security update unveiling 'lockdown' mode

WhatsApp has launched a major security update as it unveils a new 'lockdown' mode. This set of security features, known collectively as 'Strict Account Settings', is designed to protect users from advanced cyberattacks. Once turned on, the feature will limit how your WhatsApp works in some ways, including blocking attachments and media from people you don't know. Accounts with lockdown mode activated will also automatically silence all incoming calls from people not in their contacts.