Twitter turned off the ability to receive tweet alerts via SMS messages in most countries last week
Jacob Kastrenakes / The Verge :
Context & Ripple Effects
This is the quiet endgame of a retreat that started with a breach. After Jack Dorsey's own account was compromised via SMS in September 2019, Twitter pulled the plug on texting tweets, calling it "temporarily" turned off. Two months later it let users enroll in 2FA without a phone number at all and made authenticator apps the default over SMS (2FA without a phone number).
Turning off inbound tweet alerts by SMS in most countries closes out the remaining consumer-facing SMS surface. The throughline across this coverage is consistent: every feature that routes through the phone network has been treated as an attack surface first and a convenience second.
First-order effects
- Users in most countries who relied on text-message alerts for tweets and mentions lose that notification path immediately and have to fall back on push notifications or email inside Twitter's own apps.
- Twitter sheds the operational burden of maintaining carrier SMS integrations across dozens of markets, keeping the pipeline only where it still chooses to.
Second-order effects
- Notification engagement migrates fully into channels Twitter controls end-to-end — app push and email — which means Twitter also gains visibility into delivery and opens the door to ranking or throttling alerts the way carriers never allowed.
- Telecom-side SMS aggregation partners lose volume from one of the large social platforms, continuing the erosion of carrier messaging as a default notification rail.
Third-order effects
- If the pattern holds, SMS gets demoted from a default identity-and-alert layer to a legacy fallback across consumer platforms: security incidents like the Dorsey hijack become the justification for retiring network-dependent features rather than hardening them.
- Phone numbers stop being the implicit account anchor, pushing platform identity toward app-based authentication — a structural shift regulators scrutinizing account security will eventually have to evaluate.
The trend: Consumer platforms are systematically retiring SMS as a notification and authentication channel in favor of app-controlled alternatives they can secure and instrument themselves.