Malicious SS7 activity and why SMS should never by used for 2FA

Mark Tinka mark at
Mon Apr 19 09:21:25 UTC 2021

On 4/19/21 11:17, Eric Kuhnke wrote:

> I would start with cellular carriers and nations that intentionally 
> take steps to block anything VoIP as a threat to their revenue model. 
> Or because anything vpn/ipsec/whatever related is a threat to local 
> Internet censorship laws.
> Plenty of places the sort of ipsec tunnel used for vowifi is not 
> usable on whatever consumer-grade cellular or local broadband ISP you 
> might find.

Not sure what that says for the US of A, as that is where this has hit 
me so far.


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