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SOS Protocol for SMS: Specification

https://sudonull.com/sos-protocol-for-sms-specification

Study the SOS protocol specification for structured text exchange via SMS. Message format, automaton states, checksum and timeouts. For network protocol developers.

CMA investigates Microsoft: SMS for Copilot and Office

https://sudonull.com/cma-investigates-microsoft-sms-for-copilot-and-office

British CMA checks Windows, Teams and Copilot for SMS status. AI access restrictions from April 2026. Consequences for developers and competition — read the details.

Telegram Login Widget: OpenID Connect and authorization without SMS

https://sudonull.com/telegram-login-widget-openid-connect-and-authorization-without-sms

Telegram updated the Login Widget by adding support for OpenID Connect. Now websites can request a phone number and permission to send messages. Learn how it works and what is important for developers.

Bypassing 2FA in the bank: brute-force attack

https://sudonull.com/bypassing-2fa-in-the-bank-brute-force-attack

Pentest breakdown: how a bank's 4-digit SMS code is cracked in 35 sec without limits. API analysis, JS exploit, CWE-307, recommendations. For developers and pentesters.

From the web

Google Messages - Apps on Google Play

https://play.google.com/store/apps/details?id=com.google.android.apps.messaging&hl=en-US

Google Messages is the official Google app for messaging. Google Messages is revolutionizing how a billion users connect and is powered by Rich Communication Services (RCS), the industry standard...

May 29, 2025 ·

https://www.rd.com/article/what-is-sms/

May 29, 2025 · What is SMS? SMS, which stands for short message service , is a form of text messaging that allows a message to travel across mobile phones using cellular networks almost instantly.

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