According to Wikipedia
"Phone hacking is the practice of intercepting telephone calls or voicemail messages, often by accessing the voicemail messages of a mobile phone without the consent of the phone's owner. The term came to prominence during the News International phone hacking scandal, in which it was alleged (and in some cases proved in court) that the British tabloid newspaper the News of the World had been involved in the interception of voicemail messages of the British Royal Family, other public figures and cases related to murders."
There are roughly 10 billion GSM subscribers worldwide. It is estimated that worldwide mobile phone fraud will reach $40 billion dollars in a few years. US Law enforcement agents have found that 80% of drug dealers arrested in US have used cloned mobile phones.Ironically, Pablo Escobar the top Columbian drug dealer was tracked down through monitoring of his mobile phone activity.
Two aspects relevant to a Forensic Analyst:
Low-tech Fraud and associated issues:
Countermeasures for Low-Tech Frauds:
Low-Tech frauds are seen under the type of frauds which involve illegitimate actions to gain access or the desired object by using Fake signature or fake ID's etc. Few exapmles of Low-Tech frauds are mentioned below:
A Fraud Management system is implemented which looks for:
Issues in GSM Security:
Cloning process could be defined when the subscriber information is copied from one mobile device to another device in order to obtain free call or Terrorism activities. Device which is cloned will be the exact replica of the original device used for cloning but the bill will be genrated for only the legitimate user. Attacker enjoys the free calls.
GSM Networks and Associated Attacks:
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