The researches found the passwords for Telnet access on Google Search and used http access to monitor the communications.

SIM Card vulnerability

SIM cards are vulnerable as per the researchers the numbers is considerably less.

The researchers managed to exploit only 20 of the 100 SIM cards they obtained for testing.

Majority Of 4G USB Modems Vulnerable And SIM Cards Exploitable Via SMS

By sending a binary SMS, the researchers managed to lock SIM cards and sniff and decrypt unit traffic.

We dedicated the second part of our research to SIM cards.

Some you may hack by brute-forcing DES keys.

Almost all 4G USB Modems And SIM Cards Exploitable Via SMS

Some respond to an external command without any protection whatsoever and may give out a lot of sensitive information.

It is enough to obtain the key within 3 days.

However breaking the 3DES encryption keys took a tad longer for the researchers.

Almost all 4G USB Modems And SIM Cards Exploitable Via SMS

Certain ATMs also deploy these USB modem technologies to remotely transmit payment data.

Video

The video of the presentation they made is given below

Resource :Positive Technologies Blog.

Almost all 4G USB Modems And SIM Cards Exploitable Via SMS

Almost all 4G USB Modems And SIM Cards Exploitable Via SMS

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source: www.techworm.net