Most of us send messages daily without knowing what happens in the background. Text a colleague, share a photo with a friend, or plan a trip, it all feels secure. But if those messages could talk, it would probably admit: “Someone else is looking at me.” That’s because most centralized messaging apps, even those claiming to be “secure,” still expose some level of information. The content may be encrypted, but the metadata like who you talk to, how often, and at what time will remain visible. ...