WhatsApp Signal Telegram Encryption Encrypted Messaging Security Risks Security Discord Security Protocols Slack Privacy Google Messages RCS Messenger User Experience Secure Messaging Encrypted Communication iMessage Data Security Content Moderation Dating Apps End-to-End Encryption Meta Messenger Comparative Analysis Future Developments Competitors Security Breaches Security Flaws Workplace Messaging Apps Skype Email Management Google Chat Signal Messenger Comparison Apple iMessage Security Features Messages Facebook Messenger WhatsApp Integration