New U.S. Guidelines Could Halt Use of SMS for Two-Factor Authentication
The US National Institute for Standards and Technology has released a new draft of its Digital Authentication Guideline, which sets the rules that all authentication software eventually follows. In the document, NIST deprecates the implementation of SMS as a method with which users validate a second level of security on various accounts, "no longer" allowing its use in future guidelines as it is considered not secure enough (via TechCrunch).

Two-factor authentication via SMS (left) and an alternative trusted iOS device (right)
Setting up two-factor authentication through text messages is one of the most popular ways users add another layer of security onto an account, on top of a basic password, including those for Apple's own software, like Apple ID and iCloud. Other than SMS, Apple allows users to implement two-factor authentication through a simple push notification sent to another "
trusted device," or a phone call.
If the out of band verification is to be made using a SMS message on a public mobile telephone network, the verifier SHALL verify that the pre-registered telephone number being used is actually associated with a mobile network and not with a VoIP (or other software-based) service. It then sends the SMS message to the pre-registered telephone number. Changing the pre-registered telephone number SHALL NOT be possible without two-factor authentication at the time of the change. OOB using SMS is deprecated, and will no longer be allowed in future releases of this guidance.
The new guidelines also make a point for companies to ensure that two-factor authentication notifications aren't going through a VoIP service, which could be easily compromised. NIST also includes "limited use" of biometrics as a way for users to gain access to their second layer of authentication, meaning Apple could pivot to Touch ID as an alternative if SMS support for the security feature officially comes to an end.
Popular Stories
In an all-caps post on Truth Social today, U.S. President Donald Trump said Apple should fully end its diversity, equity, and inclusion (DEI) policies.
Tim Cook meeting with President Trump in 2017
"APPLE SHOULD GET RID OF DEI RULES, NOT JUST MAKE ADJUSTMENTS TO THEM," he wrote.
Trump's post comes one day after Apple held its annual shareholders meeting, during which a majority of...
In a recent press release, Apple confirmed that iOS 18.4 will be released in April.
From the Apple News+ Food announcement:Coming with iOS 18.4 and iPadOS 18.4 in April, Apple News+ subscribers will have access to Apple News+ Food, a new section that will feature tens of thousands of recipes — as well as stories about restaurants, healthy eating, kitchen essentials, and more — from the...
The Apple Watch Ultra 3 is expected to launch later this year, arriving two years after the previous model with a series of improvements.
While no noticeable design changes are expected for the third generation since the company tends to stick with the same Apple Watch design through three generations before changing it, there are a series of internal upgrades on the way.
By the time the ...
Apple is making significant headway on its long-rumored foldable iPhone, with a new report suggesting the company has achieved a major breakthrough by effectively eliminating the screen crease that plagues current foldable devices.
According to Korean publication ETNews, Apple is finalizing its component suppliers for the foldable iPhone, with the selection process expected to be completed...
Multiple iPhone owners today noticed a pronunciation processing issue that causes the word "Trump" to momentarily show up when using dictation to send a message with the word "racist."
In some cases, when speaking the word racist through the iPhone's built-in dictation feature, the iPhone briefly interprets the spoken word as "Trump" and "Trump" text shows up in the Messages app before being ...
According to a post on X today from a leaker known as Kosutami, Apple plans to launch AirPods Pro 3 in May or June this year.
The leaker also claimed that an AirTag 2 will launch around the same time.
Kosutami is best known as a collector of prototype Apple hardware, but they have occasionally shared accurate information about Apple's future product plans. For example, they accurately...
Apple plans to launch a second-generation AirTag in May or June this year, according to a post today from a leaker known as Kosutami.
Bloomberg's Mark Gurman previously reported that a new AirTag would be released in mid-2025. May or June would align with that timeframe.
Below, we recap three new features rumored for the AirTag 2:
With a second-generation Ultra Wideband chip, the...
The first beta of iOS 18.4 is now available, and it includes a small but useful change for CarPlay.
As we noted in our list of iOS 18.4 features, CarPlay now shows a third row of icons, up from two rows previously. However, this change is only visible in vehicles with a larger center display. For example, a MacRumors Forums member noticed the change in a Toyota Tundra, which can be equipped...