Why You Should Stop Sending SMS Messages—Even On Apple iMessage

death month, I advised users to stop using Facebook Messenger and switch to its stablemate WhatsApp. The rationality is simple—security. This led to people asking me about Apple iMessage and SMS—including Google Messages, and whether these are impregnable to use. The answer is not american samoa simple as you might like .

The argue you should switch from Facebook Messenger to WhatsApp is toss off to end-to-end encoding. You ’ ve probably seen this discussed in the media—it can be so procure that lawmakers actually want weaknesses introduced to help them investigate crimes. Without that, platforms can not provide exploiter contented even when warranted by a court .

Most of the traffic travelling to and from your devices is now encrypted—but that only solves half the trouble. The risk remains in who holds the keys. When you end-to-end code data or messages, keys are only held by the two ( or multiple ) endpoints of that link—you and the person you ’ re messaging, for model. even though you might be using WhatsApp ’ mho infrastructure, for example, it can ’ thyroxine read what you send .

Your earphone is constantly a weakness, of course. If I have your device and it ’ mho unlocked, I can read all your messages. There ’ south besides the risk of an account commandeer, which is broadly the same thing—compromising a decode end point. The end-to-end encoding itself, though, can be trusted to keep your messages safe and fasten .

WhatsApp is end-to-end code —it popularized this level of security and it has become one of its hallmarks. By contrast, its Facebook stablemate Messenger is not end-to-end encrypted by default. Recommending Facebook Messenger users to switch to WhatsApp is easy— Facebook itself advocates powerfully for throughout encoding, while WhatsApp says it ’ s a must. The only thing stopping an immediate encoding upgrade for Messenger is the technical complexity involved.

SMS is at the other end of the security spectrum, built on an archaic architecture that sits inside the many cellular networks around the world. When you send an SMS, while it might be secure between your phone and your network, once there it can be well intercepted and collected. last year I reported on hackers compromising global telephone company to collect SMS dealings between targeted senders and recipients. As FireEye warned at the clock, “ users and organizations must consider the risk of unencrypted data being wiretap respective layers upstream in their cellular communication chain. ”
The advantage of SMS, though, is that it is a omnipresent as it gets. however dim-witted and un-smart your telephone might be, it will be able to send and receive plaintext short-form messages. But the engineering is now used for much more than that. Longer messages, MMS attachments, fiscal details, private data, medium information .
about all smartphones now run on either Apple ’ s io or Google ’ s Android operating systems, and thus their default applications have become the front-end for built-in messaging. The two platforms operate different security : Apple ’ south iMessage is throughout code, and while there ’ s less public information on this than with WhatsApp or Signal, it is fasten. Google does not— it only encrypts between the device and its server, not end-to-end, although it ’ mho reportedly working to address this .
Apple launched iMessage as an alternate to the WhatsApp-style extraordinary messengers, adding rich functionality and security, but limiting that to the Apple user community. Because iMessage users message beyond that community, and sometimes when a datum network is unavailable, iMessage can revert to SMS when needed. But when it does then, there is no end-to-end encoding .

The challenge if you don ’ metric ton disable this choice is that you may not know when your earphone fails over to SMS—there won ’ triiodothyronine be a warn. In a very quick, identical ad hoc straw poll of a few non-security experts, most were unaware of the security remainder between iMessages blue bubble and its revert to SMS, green alternatives. You can disable SMS message sending within the settings on your device—see below. This won ’ triiodothyronine stop you receiving SMS messages, and when you reply to a non-Apple drug user, that will be by SMS. But when you think it ’ south iMessage and end-to-end encrypted, it will always be iMessage and end-to-end encrypted .

How to disable SMS within iMessage


Google ’ s Messages is more a front-end to SMS than a classify messenger, adding richer functionality but with a tightly integrated approach. SMS is immediately upgrading to RCS, its new successor. unfortunately RCS is not throughout encrypted, built as it is on the same network computer architecture as SMS. A report from Germany ’ s SRLabs last class warned that RCS would be wide open to hackers unless its deployment approach was revised. We truly need Google to deploy the broad encoding functionality it reportedly has in the works.

Whichever service you use, there are SMS messages you will need to however receive—one time security codes, for exercise. Despite the lack of SMS security, a company sending you a code knows it ’ s your phone number, which adds a layer of security. There are besides initiatives afoot to verify those senders. Just make sure you never share those codes. And beyond text from service providers—here ’ s your code, your taxi has arrived, here ’ s the balance on your card, your flowers were delivered, and such like, you should not use SMS for your own individual messages. There ’ s no rationality to do so .
My potent recommendation is to use an throughout code messenger for all your personal traffic, flush if you don ’ t think it ’ sulfur particularly sensible. Why would you not—it ’ sulfur all free to use. WhatsApp remains my recommendation, given its relief of use and huge exploiter install base. But if you want even more security system or to avoid Facebook, then Signal is the app of choice for many security folk. And if you use iMessage, then equitable make certain you understand the security implications when blasphemous turns to green .

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