The SenderId of an SMS can be easily spoofed by anybody betweeen Google and your phone. Note that Google does not directly send you an SMS but uses service providers that have network connections (maybe indirectly) to your phone. And since the Telcos between Google and your phone want to filter out non-person-to-person traffic (because of $), it makes sense ...
Reasons i can think of:
if the backups are encrypted, the user has to store a password. And it has to be a good one, so you cant really let the user choose it either. That means most of the users wont even be able to access their own backups. Thats just how it is.
Its on purpose:
so that most messages can be accessed by the NSA.
I guess its the ...
Based on the information you've provided I can make the following notes:
I discovered a few days ago that my gmail account had the following
Application Specific Password (not sure when created, Google does not
Adding an Application Specific Password requires you re-authenticate, even in an existing session. This has me believe ...
"This is the protection you are getting from these checks. You don't want to update your software right now while something is messed up on Google's end. Wait until they fix it. Don't try to override by reinstalling keys until some official word comes out that a new key is the solution."
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There is a malware which is spreading nowadays that clone the ID of chrome, so an attacker can access any site/s thanks to cookie sessions saved on that chrome. The technique is very sophisticated and 2FA it's useless here because they're already logged in with your cloned browser id and nothing require to be checked. So most probably, if you're a google ...
Run forensics on the phone:
Check the latest app permissions (timeframe of hack happened)
Get a list of the SMS from OTP provider (from carrier company) (timeframe of hack) compare it to to SMS that you have on the phone (malware could have deleted that)
Capture packets sent from phone through the wi-fi (deploy a VM, deploy a gateway on it, deploy a ...
Mobile communication in GSM, UMTS and LTE is done according to 3GPP.
The TP-OA field in SMS-DELIVER TPDU in an incoming SMS typically contains the number of a sender, but can also contain an alpha-numerical field, because the MAP protocol (the one used for sending SMS messages among others) allow specifying either a phone number or an alpha-numeric value as ...