In its latest bid to transform from a public square into an “everything app,” X has officially unveiled Chat, a sweeping overhaul of its direct messaging system. Announced on Friday, the new service replaces the platform’s legacy DMs with a suite of privacy-focused features, including end-to-end encryption (E2EE), video and voice calling, and disappearing messages.

The rollout, available now on iOS and the web with an Android version coming “soon,” marks X’s most aggressive attempt yet to compete with established messaging giants like WhatsApp, Signal, and iMessage. However, while the feature set is robust, security experts caution that the encryption comes with significant “fine print” that users should understand before trusting the platform with their most sensitive secrets.

For Elon Musk, the launch of Chat is more than just a software update; it is a structural pillar for his vision of X as an ecosystem for finance, media, and private communication. By unifying messaging into a distinct brand within the app, X is signaling that it no longer views DMs as a side feature for sliding into replies, but as a primary utility.

“X just rolled out an entire new communications stack,” Musk posted following the launch, touting the transition to a system built on “Bitcoin-style” encryption architecture.

The new interface brings X in line with modern standards. Users can now share large files, initiate high-definition video and voice calls without a phone number, and utilize “disappearing messages”—a favorite feature of the privacy-conscious crowd—which automatically wipes message history after a set period. Additionally, a new “Screenshot Blocking” feature allows users to prevent recipients from capturing images of the chat, or at the very least, notifies the sender if an attempt is made.

While the headline feature is End-to-End Encryption—meaning supposedly only the sender and recipient can read the message—X’s implementation differs critically from the “gold standard” protocols used by Signal or WhatsApp.

In a surprisingly transparent support document released alongside the launch, X acknowledged two major security gaps:

1. Metadata is visible: While the content of your messages is encrypted, the metadata is not. This means X (and by extension, anyone who legally compels X) can still see who you are talking to, when you are talking to them, and how often.
2. No man-in-the-middle (MITM) protection: Perhaps most critically, X admits it currently lacks safeguards against “man-in-the-middle” attacks. In this scenario, if a malicious insider—or X itself, complying with a government order—were to intercept the chat and insert their own encryption key, neither the sender nor the receiver would be alerted.

“If someone… were to compromise an encrypted conversation, neither the sender or receiver would know,” the company’s support page reads. X has stated that tools to verify device identity and message authenticity are being developed for a future update, but for now, the system requires a degree of trust that platforms like Signal do not demand.

Furthermore, the system currently lacks “forward secrecy.” If a user’s device key is compromised today, an attacker could potentially decrypt all past messages, a vulnerability that most modern encrypted apps have long since patched.

This is not X’s first dalliance with encryption. The platform, formerly known as Twitter, first flirted with encrypted DMs as far back as 2018, but the project was shelved. Under Musk, a basic version was introduced in 2023 for paying subscribers, but it was widely criticized for being clunky and limited.

That feature was quietly paused in May 2025, with the company promising a “re-architecture.” Chat appears to be the result of that six-month hiatus—a more polished, feature-rich product that is evidently designed to keep users inside the X ecosystem for longer.

For the average user, Chat offers a massive upgrade in utility. The ability to make calls and send self-destructing messages makes X a viable alternative to giving out your phone number to strangers on the internet.

However, for journalists, activists, or anyone requiring state-level privacy, the current limitations regarding metadata and MITM attacks suggest that Chat is not yet a replacement for Signal. X has built a compelling messaging app, but it hasn’t yet built a bulletproof one.