this is 100% true, If you are using a service like google voice for SMS,
then this is technically a vulnerable service potentially. in addition even
traditional services can have a vulnerability. Some social engineering, a
new sim card activation, and poof you now have their SMS coming to your
device for 2FA.
MS only uses the phone number to verify the device your 2FA app is
installed on. once done then it uses an encrypted process. Google is even a
touch more cryptic as their process is not automated, you have to scan a QR
code or enter a string of digits to set the algorithm.
"For now, services can continue with SMS as long as it isn’t via a service
that virtualizes phone numbers — the risk of exposure and tampering there
might be considered too great."
On Wed, Jul 27, 2016 at 8:06 AM, Eric Cope <
eric.cope@gmail.com> wrote:
> Given the SMS 2FA vs. standard password, it seems foolish to NOT use the
> SMS 2FA. There's no such thing as absolute security. SMS 2FA is more secure
> than the current alternatives.
>
> What am I missing?
>
> On Wed, Jul 27, 2016 at 12:13 AM, der.hans <PLUGd@lufthans.com> wrote:
>
>> moin moin,
>>
>> I've been recommending for years that web sites should not be given your
>> phone number for 2 factor authentication. First of all, they don't need
>> your phone number :). Secondly, it's not secure.
>>
>> Now the NIST agrees.
>>
>>
>> https://techcrunch.com/2016/07/25/nist-declares-the-age-of-sms-based-2-factor-authentication-over/?ncid=rss&utm_source=feedburner&utm_medium=feed&utm_campaign=sfgplus&sr_share=googleplus&%3Fncid=sfgplus
>>
>> See also the following.
>>
>>
>> https://danielpocock.com/how-many-mobile-phone-accounts-will-be-hijacked-this-summer
>>
>> If you're setting up a service to use 2FA, please do not include SMS as
>> one of the options.
>>
>> ciao,
>>
>> der.hans
>> --
>> # http://www.LuftHans.com/ http://www.PhxLinux.org/
>> # So much shiny, so little time. -- der.hans
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>
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--
A mouse trap, placed on top of your alarm clock, will prevent you from
rolling over and going back to sleep after you hit the snooze button.
Stephen
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