TL;DR: SMS spoofing is a phishing attack carried out over text message, also known as smishing. Scammers impersonate a courier, a bank, an online store, or a government...
TL;DR: SMS opt-in is the explicit permission a customer gives before receiving marketing text messages, while SMS opt-out is their right to withdraw that permission...
TL;DR: OTP stands for one-time password (or one-time passcode), an autogenerated code that's valid for a single login or transaction. OTP codes come in two types,...
TL;DR: Email address validation checks whether an address is correctly formatted, connected to a live domain, and capable of receiving messages. For high-volume...
TL;DR: NIS2 compliance means implementing the 10 technical and organizational measures defined in Article 21 of EU Directive 2022/2555 - covering supply chain...
TL;DR: Two-factor authentication (2FA) requires users to verify their identity using two separate factors: a password and a second proof like a one-time...
TL;DR: As of May 11, 2026, RCS messages between iPhone and Android can be end-to-end encrypted for the first time. The feature launched in beta with iOS...
More and more companies are using verified Viber messages to communicate with their customers - sending delivery updates, authorization codes, order confirmations,...
The discussion around Rich Communication Services (RCS) often revolves around their rich media and user engagement capabilities. But what about their security standards?...