Showing posts with label GSM. Show all posts
Showing posts with label GSM. Show all posts

Self Deleting Text Messages

Self Deleting Text Messages
How to send self deleting SMS according to a computer hacking website that reports "this technique is called SAFE-TEXT. It's a technique where a message destroys itself after being read."

Before proceeding further there are several matters worth mentioning.

Sent flash SMS text messages are not automatically saved and thus delete after opening and closing the message

Cell Site Analysis Fundamentals

Cell Site Analysis FundamentalsCOURSE CONTENTSection 1 IntroductionSection 2 Legal and Technical FrameworksSection 3 GSM and 3GPP StandardsSection 4 Subscriber Check/Billing/Call Records Check ListSection 5 Example Subscriber CheckSection 6 Example Call Detail/Data Record (CDR)Section 7 Example Subscriber BillingSection 8 Example of Call RecordsSection 9 Example Mobile Network DetailsSection 10

Orange and Vodka - mixing mobile networks

Orange and Vodka - mixing mobile networks(shaken, not stirred).Good title for a book or article that heading. I thought this would be a useful post regarding the unusual occurrence of roaming onto a forbidden UK network from the home UK network.These screenshots record an event that happened on my wireless broadband. In the area I was located at the time Orange provided GPRS at 56K but download

UTRAN & GERAN 3G Inter-PLMN Handover

UTRAN & GERAN 3G Inter-PLMN Handover
.
The subscriber's home network is France. The visited network where the subscriber is registered in a VLR (Visitor Location Register) is Germany. The signalling connection between HLR (Home Location Register) and VLR is indicated by dotted lines. The calls for the subscriber are controlled by the MSC collocated to the VLR where the subscriber is registered.

Seminar on GSM Standards Updated

Seminar on GSM Standards Updated.Updated for Seminar on GSM Standards (previous link):http://trewmte.blogspot.com/2010/03/seminar-on-gsm-standards.html.It doesn't appear easy to take in the mobile telephone technical standards and that the numerous standards that are out there add an additional layer of perceived complexity..To address this particular matter and demonstrate that dealing with

Linux - out-of-memory (L-OOM)

Linux - out-of-memory (L-OOM) Whilst researching on mobile phones using Linux OS I came across a report on guidelines for creating robust embedded systems (published in 2009). The report's discussion arrived at the topic out-of-memory (OOM) and perceived flaws with Linux overbooking the kernel. The report calls this 'OOM Killer' The report noted:"One Linux detractor says this about the

Seminar on GSM Standards

Seminar on GSM Standards.It is clear that associated with mobile phone examination to obtain evidence that examiners must read the GSM Standards to understand the data evidence and whether the devices used acquire the data. The concern amongst examiners still exists because there are so many Standards current and historical and each providing variations on obtaining evidence and interpretation

Location Area Codes (LAC)

Location Area Codes (LAC)The desire to create databases containing MCC/MNC/LAC/CellID may seem a good idea but might produce inaccurate or erroenous results depending upon the way in which the information is used. It is known that LACs (and CellIDs for that matter) change and therefore a database becomes out of data fairly quickly.LACs change for various reasons. Commonly LAC Dimensioning can be

Mobile Phones, Security, Economy and Employment

Mobile Phones, Security, Economy and Employment.An article in the Telegraph on the 6th November 2009 caught my eye, titled "Inventor of mobile phones says they have become 'too complicated" are the thoughts of Martin Cooper who was th lead engineer at Motorola and made the first mobile phone call in 1973. .http://www.telegraph.co.uk/expat/expatnews/6509126/

BCCH data uncovered

BCCH data uncovered.The data found in the elementary file broadcast control channel (EFBCCH) 7F20:6F74 / 7F21:6F74 can provide useful data relating to a geographical radio area when combined with location area information data..Method for translating BCCH information data. The question is, is the translation below to find the BCCH frequencies correct and what have I not mentioned below? You will

Call Detail Record (CDR) GSM Mobile Telephone Call

Call Detail Record (CDR) GSM Mobile Telephone Call.For every mobile telephone call there should be a corresponding Call Detail Record (CDR). It can contain information that the mobile network operator uses for subscriber identification, call charging, services obtained, call routing etc. . .A Call Detail Record (CDR) can contain the identification of the start and end cell. Do remember, for the

GSM mobile phone radio technologies power ahead

GSM mobile phone radio technologies power ahead.As mobile and mobile telephone communications power ahead with continuing growth, and predictions for growth are commonly reported upto 2015, it is not surprising that, once again, positive *statistics for GSM (family of systems: GSM, GPRS, EDGE, WCDMA-HSPA) confirms the digital wireless future. *Market Research: GSA.- 3.54 billion GSM subs; 89.5%

Part 2 MOBILE FORENSICS AND EVIDENCE DEGREES

Part 2 MOBILE FORENSICS AND EVIDENCE DEGREESI have received a question about the Degrees and whether there is sufficient educational material for them.Q: Is there 10 years worth of educational material for a Degree?A: Yes, I have been dealing with GSM for over 15 years and I have reference material and standards going back to 1991 and books that discuss GSM going back to 1988. There are, at

Join MTEB Forum if your are in wireless / telecomms

Join MTEB Forum if your are in wireless / telecomms.If you work in forensics and/or examination devices, investigations or deal with evidence then the MTEB forum puts you in contact with other professionals when you need help with technical issues, technical discussions or generally want to stay up to date. Due to the make up of the forum members: experts, high level security, law enforcement and

GSM Mast Installations (Density)

GSM Mast Installations (Density).When planning a cellular radio network there are many aspects to consider. The matter of radio technology and their frequencies (carriers) are but two examples. A relevance to be understood from these examples relate to what services may be obtained and delivered through these carriers? GSM for basic voice and text services and W-CDMA providing high data rates for

GSM MS List of States for the cell selection process

GSM MS List of States for the cell selection processThe GSM mobile station (MS) enters various states when switched on, but in the idle mode. Three such states are PLMN selection, cell selection and location registration that GSM standards described as a "set of states". The overall state of the mobile is thus a "composite of the states of the three processes". As TS 100 930 makes mention "In

China Mobile Telephones

China Mobile Telephone Exports It wasn't difficult to guess that with China's industrial revolution into manufacturing everything and its growth markets in mobile telephones that China would aim to compete with the world's best known handset brandnames, such as Nokia, Motorola, Samsung, SonyEricsson, Alcatel, Sagem etc. I thought it might be helpful for mobile telephone examiners to be aware of

GSM Radio Test Measurements - Non-Dominance

GSM Radio Test Measurements - Non-Dominance Screen Image 1Readers and cell site analysis students will recall the thread at http://trewmte.blogspot.com/2007/01/gsm-radio-test-measurements.html regarding GSM Radio Test Measurements. In that thread the discussion related to possible anomalies and interpretation regarding radio test measurements. In this thread I want to highlight another radio

GSM Radio Test Measurements

GSM Radio Test MeasurementsRadio Test Measurements 1 The screen image (Radio Test Measurements 1) represents the output results of radio coverage detected at the receiver (mobile telephone) and represent a single static view of that coverage at one instance. During cell site analysis there will be many screens obtained but for the purposes of this discussion this single screen image will do the

3G USIM-Detective Training Course 2007

3G USIM-Detective Training Course 2007This core course introduces mobile telephone examiners and computer investigators to foundation information about Universal Subscriber Identity Module (USIM) card computer architecture, operating functionality, file structures and elementary files. The course is intended to assist delegates understand the complexity of 3G USIM cards and potential locations