Archive for the ‘SIM card’ tag
Security experts have found out a security flaw that may make some SIM cards vulnerable to hackers
SIM card bug. There are over 7 billion SIM cards in use around the world and all of them are carrying personal and delicate data such as subscribers’ identity, phone numbers, account details, etc. However, we tend to think that SIM cards are very well protected and the coding standard being quite reliable cannot be hacked so easily. This notion may have to change soon as people from Security Research Labs claim that they have pinpointed a security bug that could potentially affect millions of SIM cards. The issue is connected with over-the-air (OTA) updates which can be sent to a SIM card via a text message. Cryptographers from Security Research Labs found a way a crack such SIM update keys and get access to a SIM card remotely. Then through that security hole they successfully can do such things like copying the SIM card and all the data in it, installing malware that may for example send texts to premium numbers.
The good news is that only older SIM cards can be hacked this way and it is estimated that 1 out of 8 may be affected. Nevertheless, this still means that more than half a million SIM cards can be hacked via an SMS. Security Research Labs have some suggestion on how to prevent your SIM card from being hacked using OTA on their website. They have also announced that their research will be presented at Black Hat security conference on July 31 in Las Vegas.
Swiss biologist, Jean-Marc Landry, is working on a SIM-based collar that would serve as an safety system used by shepherds. It sounds ludicrous, but who said that SIM cards can be used only in mobiles. The Swiss figured out that sheep get nervous when faced by danger such as hungry wolves. If it happens the SMS-powered sheep collar would text a shepherd that sheep’s heart rate has significantly increased which would suggest a dangerous situation. Alarmed shepherds could then locate and help their flocks.
Mr Landry wants to use the collar not only to inform but also to react for example, by emitting a loud noise or some chemicals that would repeal the attackers. The inventor decided to build such a device, because Swiss sheep have recently been attacked more frequently by wolves and not everybody has enough money to have a sheepdog. This example of SIM card -based equipment show how mobile technology is invading every aspect of life even such surprising as animal husbandry.
SIM card stands for Subscriber Identity Module card and it’s a module used in mobile phones to identify a user and call through their accounts. There are three sizes of SIM cards: full-size (like a credit card, which is not used anymore), mini-SIM (most known size), and micro-SIM (used in newest smartphones and tablets). Besides the size of the cards there are almost no differences between those three types as they have the same thickness and the same positions of pins.
What is a SIM card?
We take SIM cards for granted, but they really make our life easier. Without them we would have to create new contacts and we would lose all text messages whenever we buy a new phone. Our accounts would be tied to one phone, so if your battery is flat you couldn’t use your friend’s phone to check your texts messages or call somebody from your contact list. Apart from, in the era of pricey high-end smartphones it is important for us to be able to change the operator without changing the phone.Since the introduction of GSM standard, SIM cards became a part of mobile phones. It is impossible to practically use a mobile phone without having a SIM card. This electronic card stores information about the user – his phonebook and text messages to which access is protected by a PIN number. However, having a contract SIM card means that the company can identify where are you and to whom are you calling, which may be a privacy issues for some people. That is why many people opt for pay as you go SIM cards, because they are not tied or registered to any user, which means you can stay anonymous for the mobile operator.