Ethical Hacking and technical tricks

IMSI Catchers What is an IMSI catcher? An IMSI catcher is an intrusive piece of technology that can be used to locate and track all mobile phones that are switched on in a certain area.  An IMSI catcher does this by ‘pretending’ to be a mobile phone tower - tricking your phone into connecting to the IMSI-catcher, and then revealing your personal details without your knowledge. IMSI catchers are indiscriminate surveillance tools that could be used to  track who attends a political demonstration or a public event like a football match. They can even be used to monitor your calls and edit your messages – and you wouldn’t even know it was happening. Who is using IMSI catchers? The police  “neither confirm nor deny”  that they use IMSI catchers. This means that the police are refusing to explain to the public how they could use these invasive devices to secretly access data from our mobile phones. However, documents obtained by  Bristol Cable  show that the followin

International Mobile Subscriber Identity (IMSI) Definition - What does  International Mobile Subscriber Identity (IMSI)  mean? An international mobile subscriber identity (IMSI) is a unique number, usually fifteen digits, associated with Global System for Mobile Communications (GSM) and Universal Mobile Telecommunications System (UMTS) network mobile phone users. The IMSI is a unique number identifying a GSM subscriber. This number has two parts. The initial part is comprised of six digits in the North American standard and five digits in the European standard. It identifies the GSM network operator in a specific country with whom the subscriber holds an account. The second part is allocated by the network operator to uniquely identify the subscriber. The IMSI is stored in the Subscriber Identity Module (SIM) inside the phone and is sent by the phone to the appropriate network. The IMSI is used to acquire the details of the mobile in the Home Location Register (H