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21.04.2015
According to the latest reports, the latter holds more truth, as hackers have demonstrated – yet again – how simple it is to override sophisticated security precautions and eavesdrop on someone simply by getting their phone number. First proved by German security researcher Karsten Nohl in 2014, the hack made another appearance over a year later for CBS’s 60 Minutes; the American television program showed that it’s still active and still a vulnerability.
If an attacker should gain access to the SS7 system, a phone number as an identifier is enough to track someone’s location, read their sent and received text messages, and record or listen to their phone calls. Nohl is currently focused on analyzing the vulnerability posed by SS7 for several international mobile phone networks, so he went on the CBS show and demonstrated the hack. Viewers were surprised to see him track the phone of US Congressman Ted Lieu in California using only its phone number, as Nohl was able to identify Lieu’s movements down to districts within Los Angeles. The problem here is that consumers can do too little else to safeguard against the snooping other than turning off their smartphone. Nohl made it very clear: “The mobile network is independent of the little GPS chip in your phone, it knows where you are.
The SS7 has often been used by hackers, but national security services, including the NSA, are also believed to make use of this system to track target users.
Karsten Nohl online privacy phone hack Phone Number phone vulnerability Signalling System No.


Tags Karsten Nohl online privacy phone hack Phone Number phone vulnerability Signalling System No.
Writer and specialized in Mobile Phones (iOS, Android, BB etc), who was with the TND team since it's inception.
On Monday night, news broke that hackers had reportedly obtained nearly 7 million Dropbox usernames and passwords.
There are a ton of apps and services that integrate with Dropbox, making it nearly impossible to track down which ones have been compromised. To play it safe, you should probably change your Dropbox password and enable two-step authentication if you haven’t already done so. Two-step authentication is a method in which an app or service requests a separate means of authentication besides your password to log into your account. Once you log into your account, press the down arrow near your name in the upper right corner. Choose how you want to receive your security code: either via text message or through a third party app.
If all else fails, Dropbox provides you with an emergency backup code to disable two-step verification.


7 (SS7), the interchange network service that acts as a broker called between mobile phone networks. No matter the phone in question, the attack has the same power because it occurs on the network side. Other than Blogging, he is also pursuing his graduation on Business Management at CA, California University.
Dropbox says its service wasn’t hacked, but that the usernames and passwords had been stolen from various third-party services.
How safe and protected are we, and do we have a deceptive sense of security when in fact we should be worried? When someone makes a call or sends a text across networks, it’s the SS7 that handles the SMS transfer, the number translation, billing and other back-end duties.




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