SMSkód

SMSkód, also known as SMS code or SMS verification code, is a six-digit number sent via Short Message Service (SMS) to a user's mobile phone. It is commonly used for two-factor authentication (2FA) in online services and applications to enhance security. When a user attempts to log in or perform a sensitive action, such as changing account settings or making a purchase, the service sends an SMSkód to the user's registered mobile number. The user then enters this code into the service to verify their identity, ensuring that only the person with access to the registered mobile number can complete the action.

SMSkóds are typically valid for a short period, often only a few minutes, to minimize the risk of unauthorized access. They are generated by the service and sent to the user's mobile phone using the service provider's SMS gateway. The use of SMSkóds has become increasingly popular due to the widespread use of smartphones and the convenience of receiving messages on mobile devices.

However, SMSkóds are not without their drawbacks. They can be intercepted by malicious actors through techniques such as SIM swapping, where the attacker tricks the mobile carrier into transferring the user's phone number to a SIM card under their control. Additionally, SMSkóds can be susceptible to phishing attacks, where a fraudulent website or application mimics the legitimate service to trick users into entering their SMSkód.

To mitigate these risks, some services are moving away from SMSkóds and adopting alternative 2FA methods, such as authentication apps or hardware tokens, which are less susceptible to interception and phishing attacks. Despite these challenges, SMSkóds remain a widely used and convenient method for securing online accounts and transactions.