#PhoneNumbers

2025-06-15

Boing Boing: Google bug let strangers find your phone number with just your Gmail address. “A new vulnerability discovered by security researcher, brutecat, allowed attackers to bruteforce the phone numbers of Google users with minimal effort. This newly disclosed vulnerability, reported on June 9, 2025, exposed a flaw in Google’s account recovery system.”

https://rbfirehose.com/2025/06/15/boing-boing-google-bug-let-strangers-find-your-phone-number-with-just-your-gmail-address/

Kevin Karhan :verified:kkarhan@infosec.space
2025-06-04

@arianvp and this is why you don't use #PushNotifications and espechally not @signalapp which can, has and will snitch on users!

Kevin Karhan :verified:kkarhan@infosec.space
2025-05-30

@Okesska short answer: You can't and any options are mere asks as in Ttrust me m8! We'll totally delete that data…"

Long answer: Consider your privacy irreversibly compromised along the used #PhoneNumbers! Get a completely new identity setup…

2025-05-27

Dan Q: Google Shared My Phone Number!. “A Google search that surfaced Three Rings CIC’s ‘Google Business Profile’ now featured… my personal mobile number. And a convenient ‘Call’ button that connects you directly to it. Some years ago, I provided my phone number to Google as part of an identity verification process, but didn’t consent to it being shared publicly. And, indeed, they […]

https://rbfirehose.com/2025/05/27/dan-q-google-shared-my-phone-number/

Kevin Karhan :verified:kkarhan@infosec.space
2025-05-22

@Arios The Problem is #Windows.

Don't expect the "#DRMflag" to work when it's being used by @signalapp (which in and of itself is problematic for demanding #PII like #PhoneNumbers and shilling a #Shitcoin-#Scam named #MobileCoin!) because like the #API to signal to Windows "I'm an #Antivirus product, disable defender!" this will be abused.

If you are actually concerned re: #privacy you'd yert signal, educate others and use #XMPP+#OMEMO (i.e. @monocles / #monoclesChat & @gajim ) or #PGP/MIME (i.e. @delta / #deltaChat & @thunderbird ) over @torproject / #Tor instead.

  • It does take a bit of setup, but in return you get extreme gains in #privacy beyond what any #VPN provider can offer - legally and technically!

Not to mention #Signal falls under #CloudAct, so your privacy there is already nonexistant!

  • Otherwise @Mer__edith would've been in jail for the rest of her life already due to the statistic inevitability of it's abuse!
Kevin Karhan :verified:kkarhan@infosec.space
2025-05-06

@debby @monocles @Stuxhost well, @delta / #deltaChat is not using #XMPP+#OMEMO (unlike #monoclesChat & #gajim) but #PGP/MIME on regular #eMail, which makes it way easier to setup in organizations as not "yet another server needed" and also easier to comply with mandatory #archival laws in #business use-cases.

Kevin Karhan :verified:kkarhan@infosec.space
2025-04-26

@dave_andersen @AVincentInSpace personally I consider any "#KYC" a risk-factor, and @signalapp has proven their ability and willingness to restrict functionality (i.e. their #Shitcoin-#Scam #MobileCoin) based off said #PhoneNumbers (Cuban, Russian and North Korean Numbers were excluded) which are in fact #PII (even if one doesn't have to #ID for obtaining a #SIM, they are circumstantial PII)...

  • They have neither "legitimate interest" nor legal mandate to collect said data (or to integrate a scammy Shitcoin for that matter) as the discontinuation of #ChatSecure / #TextSecure has eliminated the "technical necessity" to have those.

Either way they either have to yeet #Hegseth as client and/or stop collecting PII like PhoneNumbers - they gotta have to do something

#ITsec is a different story, but unlike #Signal these do not depend on a #PhoneNumber and work through @torproject / #Tor.

  • And I've been using Tor for almost 15 years daily now...
Kevin Karhan :verified:kkarhan@infosec.space
2025-04-25

@adisonverlice personally, I think @signalapp should not have integrated any #wallet or #cryptocurrency at all and instead not eben request #PhoneNumbers (which are #PII) and move tueir system onto #Tor and have their endpoints as #OnionServce, because being a #PaymentProcessor (and lets be honest #MobileCoin got pitched for #payments) is at best a "legal nightmare" if not a straight-up "You go to Jail!"-card as a matter f principle!

Anyone who wants to coordinate #payments and #finance can do so with external wallets like #FeatherWallet anyway.

Kevin Karhan :verified:kkarhan@infosec.space
2025-04-24

@dave_andersen even @signalapp has to comply with #CloudAct.

  • And we can be very shure they did simply because it's a statistical inevitability by the sheer amount of users they have…

Only real #E2EE (= #SelfHosting-capable with #SelfCustody of all the keys) can be considered safe.

Kevin Karhan :verified:kkarhan@infosec.space
2025-04-08

@bogdan anything that mandates #2FA and doesn't provide #TOTP or #HOTP support as per #RFC but demand something like #PhoneNumbers that are #PII should be outlawed.

  • I can accept #PGP-based 2FA as a compromise...
Kevin Karhan :verified:kkarhan@infosec.space
2025-03-28

@signalapp no it's not.

Being a #centralized, #SingleVendor & #SingleProvider solution subject to #CloudAct makes you inherently vulnerable by your own choice and thus trivial to shutdown compared to real #E2EE with #SelfCustody of all the keys and true #decentralization as well as #SelfHosting (i.e. #PGP/MIME [see @delta / #deltaChat et. al.] and #XMPP+#OMEMO [see @monocles / #monoclesChat et. al.]!)

And don't even get me started on you collecting #PII (espechally #PhoneNumbers) for no valid reason, (thus violating #GDPR & #BDSG)...

But yeah, I'll be patient to shout "#ToldYaSo" to your annoying cult of fanboys!

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-27

@Andromxda @mollyim no it's not bs and fanboying @signalapp isn't going to change that.

If #Signal was secure it would be the #1 comms tool of organized crime...

Real professionals use #SelfHosting capable, fully #FLOSS'd solutions like #PGP/MIME & #XMPP+#OMEMO.

It's just me reading the room: Cuz #ComSec isn't done woth "JuSt UsE sIgNaL!" and everyone who claims so without pointing out #OpSec, #InfoSec & #ITsec is BSing hard.

  • The cold hard truth is that #TechLiteracy is irreplaceable and the only solution to it is to actually teach normies how to "get gud" with stuff like PGP.

Fortunatelty, @thunderbird and @tails_live / @tails / #Tails and many other tools make that easier than ever before.

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-27

@pixelcode @taylan @signalapp the #centralization, espechally without means to hide it's traffic via @torproject / #Tor makes it trivial to detect and track @signalapp / #Signal users.

  • Add to that the fact that Signal has #PhoneNumbers = #PII on them and the fact they are incorporated in the #USA, thus subject to #CloudAct and it's not a matter if they snitch on users but how many thousands if not millions got subopena'd to this day.

And with no self-custody of keys it's trivial to #Room641A the users if the devs get "motivated" under threat of spending the rest of theor lives in jail.

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-26

@taylan @pixelcode also add tocthe fact that @signalapp collects and stores #PII like #PhoneNumbers...

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-26

@signalapp It's not #disinfo when one points out that you demand #PII aka. #PhoneNumbers from Users and that is literally a architectural vulnerability, alongside your #proprietary & #Centralized #Infrastructure.

Not to mention the lack of @torproject / #Tor support with an #OnionService or the willingness to fulfill #cyberfacist "Embargoes" or shilling a #Shitcoin #Scam named #MobileCoin!

  • #KYC is the illicit activity!!!

And don't get me started on the #cyberfacism that is #CloudAct.

  • If you were secure, criminals would've used your platform so hard, it would've been shutdown like #EncroChat and #SkyECC.

I may nit have allvthe.evidence yet, but #Signal stenches like #ANØM: #Honeypot-esque!

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-25

@jrredho @walkinglampshade @fj

Don't 'splain me, m8!

Their figleaf exuses are not legitimate and @signalapp's @Mer__edith knows that...

  • After all, @monocles doesn't require any #PII at all and they are in fact sustainable as in not requiring #donations, since they are user-financed (subscription)...

Read criticisms before commenting...
youtube.com/watch?v=tJoO2uWrX1M

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-25
Kevin Karhan :verified:kkarhan@infosec.space
2025-03-25

@fj I still think @signalapp has fundamental flaws like demanding #PII (#PhoneNumbers can't be obtained anonymously around the globe and are trivial to track down to devices and thus users), being subject to #CloudAct as an unnecessary & 100% avoidable risk as well as #Shitcoin-#Scam shilling (#MobileCoin) and it's #proprietary, #SingleVendor & #SingleProvider nature that makes it inferior to real #E2EE with #SelfCustody like #PGP/MIME & #XMPP+#OMEMO!

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-25

@licho @osman provide evidence the code @signalapp released is actually being deployed.

Not to mention pushing a #Shitcoin-#Scam (#MobileCoin) disqualifies #Signal per very design!
youtube.com/watch?v=tJoO2uWrX1M

  • Given the collection of #PII like #PhoneNumbers, the ability to restrict functionality based off those and the fact that #Signal is subject to #CloudAct make it inherently not trustworthy.

And don't even get me started on the fact.it's not sustainable to run it as a #VCmoneyBurningParty!

Same as identifying users: They already got a #PhoneNumber which in many juristictions one can't even obtain without #ID legally, thus making it super easy to i.e. find and locate a user. Even tze cheapest LEAs can force their local M(V)NOs to #SS7 a specific number...

  • All these are unnecessary risks, that could've been avoided, but explicitly don't even get remediated retroactively!

Again: Signal has a #Honeypot stench, and you better learn proper #E2EE, #SelfCustody and #TechLiteracy because corporations can't pull the 5th [Amendment] on your behalf!

Kevin Karhan :verified:kkarhan@infosec.space
2025-03-25

@osman, no because @signalapp is a #proprietary, #centealized, #SingleVendor & #SingleProvider solution that demands #PII like #PhoneNumbers for no valid reason, is subject to #CloudAct and only continues to exist because it's convenient as a means to fo #BulkSurveillance and mark it's users as #PeopleOfInterest.

Client Info

Server: https://mastodon.social
Version: 2025.04
Repository: https://github.com/cyevgeniy/lmst