From: thepipeline_xyz
Multifactor Authentication (MFA) is a security measure that adds a second method of verification beyond a password to confirm a user’s identity [00:00:11]. It ensures that the person attempting to access an account is genuinely who they claim to be [00:00:13]. For instance, in addition to a password for an account like Gmail, a second verification step is required [00:00:08].
Common Methods of Multifactor Authentication
MFA can be implemented using various methods, including:
- Biometric methods, such as Face ID, which is a very common form of MFA [00:00:15].
- Hardware tokens, like a physical key, that identify the user [00:00:20].
- Authenticator applications that generate a code to be provided after entering a password <a class=“yt=“yt-timestamp” data-t=“00:00:25”>[00:00:25]. Ideally, this authenticated software should reside on a secondary device, separate from the phone being actively used [00:00:32].
- Text message (SMS) codes, where a code is sent to a user’s phone after they sign in to an account, such as a bank [00:00:43]. This method is often perceived as easy and simple, allowing for quick logins [00:00:48].
Risks of Using Text Codes for Authentication
While convenient, using text message codes for authentication is considered a very dangerous method [00:00:56]. The vectors for compromise increase exponentially if an attacker gains consistent access to these codes, potentially through methods like a SIM swap or direct access to the user’s phone [00:00:59]. Neglecting to take the extra step to avoid SMS-based codes can lead to significant financial or personal loss [00:01:09].