Important Facts About Analysis of Digital Forensic And Investigation

The use of the internet has made life better because you can access a lot of information and do so many things from anywhere in the world. It has contributed to globalization. However, the internet has also brought about cyber crime in computer networks. This includes hacking, website defacement, malicious code and many more. When this happens, the need to carry out analysis of digital forensic and investigation becomes necessary.


The process of analysis begins by examining the collected evidence from computer storage devices such as hard disk, CD, DVD and many more. Forensic experts will try as much as possible to get clues which will provide proof for a crime that was committed.

The main forensic tools that are used in the investigation include commercial and open source. Choice depends on the forensic examiner himself. The most important thing is to ensure that they are able to acquire the required information for later processing in the laboratory.

Forensic experts use sophisticated technology to extract information from internal memory of mobile devices as well as the SIM card. This is then followed by carrying out a thorough analysis of gathered information and determining if it can be used as evidence.

In their analysis, forensic experts look for any alterations in the collected data. In case there is, they try to come up with ways of isolating it so that it does not interfere with the overall investigation process. They emphasize on accuracy of data for the best results.

Digital Forensic And Investigation

Digital investigation is a complicated procedure which involves the use of various methods to extract information. The method used depends on the complexity of crime committed. The most popular method which is normally used in most of the investigations is manual extraction. When the situation appears more difficult, the use of an electron microscope is employed through a process called micro read.

By carrying out analysis, forensic experts are able to know how far the system was hacked and the extent of damage. This helps to assess loss resulting from damages so that one can be compensated accordingly in a court of law.

Analysis also helps forensic examiners to classify their investigation depending on what was affected. For instance the computer, network system, software, database, mobile device e.t.c.

In conclusion, analysis of digital forensic and investigation is very important because it helps to interpret the data collected so that experts can come up with a fact based conclusion on what precisely transpired.

Why data recovery is difficult form damaged platters?

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Understanding how a damaged platter can affect the ability to recover data, requires understanding of how a hard drive works. Inside the hard drive is a disk of glass or metal called the platter. This disk has a magnetized coating, which is what enables it to store data. To be able to read and write to the platter, there is an arm that holds a read/write head. For each platter in a disk, there are two arms and two read/write heads – one on each side of the platter.

During a hard drive’s operation the drive’s motor spins very fast, creating a very small cushion of air that allows the head(s) to hover over the platter surface(s). The heads travel back and forth across the platter(s) reading, storing and locating your data without touching the platter surface. These read/write heads hover above the platter at a distance so small that an unaided human eye wouldn’t be able to see the gap. This gap is nearly 7 times thinner than a standard piece of paper.

If a physical shock happens it may cause these heads to make contact or crash with the surface of the platter and causing damage to it, it could be a ding or a severe scratch. Platter damage usually represents a significant challenge to recover data from.

Damaged Platter by heads                            Read/Write Head

 

Head crashes can be caused by shock or vibration to the drive while it is running. This can often occur to a laptop computer that is hit or dropped. An external drive is commonly prone to this type of failures due to the fact that it’s a mobile device.   Head crashes can also be caused by dust or dirt inside the drive.

Once a head or heads are damaged, as soon as the drive is turned on the damaged heads act like little knives scraping data off and lessening the chances of a successful data recovery process.

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Even if the drive still seems to be operable, to ensure that the largest percentage of your data can be recovered, it is best to immediately stop the use of your damaged drive and take it to a data recovery professional. Continuing to operate a damaged drive, even for the purposes of copying your data to a new drive, can cause data on the drive to be damaged beyond repair.

In most cases 100% recovery is not possible and several donor drives must be used along with several different techniques to achieve compatibility and data access. It is an extremely time consuming process and surgical hands are key to achieve success.

So in the end, the best course of action any time data loss is noticed, even if you don’t believe that the drive has had any physical damage, is to immediately power down the drive and bring it to a data recovery professional or seek on out at a data recovery forum. If you are suffering from data loss, contact a professional. to see how we can help you.

Benefits of programming in Java

Java

Since its first appearance in 1995, Java has come a long way to gain enormous popularity. It is a general-purpose object-oriented programming language that is concurrent, class-based, and has very less implementation dependencies. The key benefits as listed by Java team are –

 

Simple- Java is one programming language that is easy to learn and use. Even people from non-technical background won’t find Java difficult to master.

Object-Oriented- It offers a realistic and clean approach to creating and using objects which increases the program modularity and reusability. The object model of Java can be easily extended; while it can have high performance non objects at the same time (primitive types).

Robust- Robustness here is synonymous to reliability. To gain reliability, Java ensures error checking in early phases of program development. In Java, it is impossible to create bugs which are difficult to track down in rarely occurring run-time situations. One can predict how their code will behave in diverse conditions.

Multithreaded- Java allows one to write multithreaded programs, where several things can be performed simultaneously. Smoothly running and interactive systems can be created by the sophisticated solutions that Java provides for multi-process synchronization.

Architecture-Neutral- One of the major problems that programmers faced before Java surfaced was that there was no guarantee whether a code written today would run tomorrow or not. OS and processor upgrades, changes in system resources and many other factors could cause a program to malfunction. Java designers built Java Virtual Machine as an attempt to impart longevity and portability to the code. Now the programmers can “write once; run anywhere, anytime, forever.”

Platform independent- Java compiles the programs into Java bytecode, which is platform independent. This compiled code can then be executed on any system which supports JVM. The good part is that it doesn’t come at the cost of performance.

Security- Every time a normal program is downloaded from the Internet, there is an associated risk that the program might contain a virus, or any other harmful code. This malicious code is harmful as it gains unauthorized access to the system resources. For example, it might gather private information, like credit card numbers, passwords, bank account balances, and other content stored in your computer’s local storage.

While the applets in Java cannot launch such an attack as they are confined to the JRE, and they are not allowed to access other parts of the client computer. One can download applets with the confidence that security won’t be breached.

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Portability- Many different kinds of computers and operating systems connect to the Internet. So the Java programs need to execute on all of them. For instance, it won’t make sense to create different versions of applets for different kinds of machines. The same code should run on them, and Java proves to be the perfect way to generate portable executable code.

 

Along with the above stated benefits, Java is dynamic, distributed and a well designed language that provides an intuitive set of APIs. It enables writing a better code with lesser bugs and reduces the development time. It is a new age language, and due to its numerous benefits the number of developers using Java is ever increasing.

How computer forensics can find out if your spouse is cheating

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People use computers for everything, many of which are very negative, including cheating, hiding money, having an affair and just about every other thing you can imagine.

Frequently, these same people clean out the computer before they depart by deleting “everything” or “reformatting” the computer. The reality is THE EVIDENCE IS STILL THERE, waiting to be found. Often we can even prove what steps they took to try and destroy the evidence! The only question is do you want it or not.

Forensic Data Recovery is the science of recovering information from a computer that may have been deleted or otherwise damaged or hidden. Computer Forensics Investigators use specialized software to identify and restore formatted, corrupted, deleted or hidden files from computers or other electronic media while maintaining crucial data trails, time & date stamps and accurate chain of custody & controls. They also obtain access to protected or encrypted data by using specialized software. They are able to untangle the web of data and analyze emails, Internet searches, file transfers, online account transactions and anything else a computer is used to do over the Internet.

Here is a brief list of what is possible:

  • Recovery of deleted computer files
  • Data recovery even after a hard drive has been reformatted or repartitioned
  • In many cases encrypted files can be decrypted
  • Determination of web sites that have been visited
  • Determination of what files have been downloaded
  • Determination of when files were last accessed
  • Determination of when files were deleted
  • Discovery of attempts to conceal or destroy evidence
  • Discovery of attempts to fabricate evidence
  • Discovery of hidden text that was removed from the final printed version of a document
  • Discovery of faxes sent or received on a computer
  • Discovery of email messages and attachments even if previously deleted

 

Collecting electronic forensic evidence can be expensive and time consuming. Work with your attorney and/or private investigator to determine which kind of evidence will best advance your case and work within your budget. Forensic service providers call this process “triage”. Here are some sources of evidence you may want to consider:

 

 

What to target for evidence

  • Computers – An obvious choice, but if the subject of investigation has a “reasonable expectation of privacy” with respect to the information on the computer, it may not be legal to gather the evidence. Your attorney or private investigator can answer this question. Note also there are social techniques for gaining access to the computer. It may be as simple as asking.
  • Mobile Phones – Much useful information can be gathered from mobile phones these days. Chat sessions, recent calls and even GPS locations can be collected depending on your specific situation. Collecting and analyzing the mobile phone image can be expensive, but yield helpful information.
  • GPS devices – Often overlooked, GPS devices can have recent trips, favorite locations and other information stored on them.
  • USB Storage devices – Don’t overlook these small devices. Files can be recovered long after they are deleted. Information can be collected to show how and when the device was used.
  • Digital Cameras – Digital pictures often hold revealing information such as time, date and even on some models GPS location!
  • Other items – Depending on the sophistication of the subject being investigated, evidence can be hidden on Digital Video Recorders (DVRs such as Tivo), voice recorders, game consoles.

 

How to collect the information the smart way

Small things can make the difference in evidence collection. In investigating infidelity, you play an instrumental role in selecting and collecting the information you need to support your case. To be successful, you must be smart about how this is done. Here are some tips to follow:

 

  • Do not confront your spouse. Confrontation or similar provocative actions can be cues to your spouse that he or she needs to erase accounts, files or other digital information that points to his or her guilt. Resist the urge to confront. Work closely with your attorney and private investigator according to a plan that will get you results.
  • Request access, but don’t push. Even brief access to your spouse’s computer can overcome the reasonable expectation of privacy your spouse has with his or her computer. This access can then demonstrate you have the legal right in the future to have a forensic analyst collect the information on the computer on your behalf without his or her knowledge. So if you suspect your spouse’s computer holds evidence, speak to your spouse and request access, but don’t push too hard, as this could raise suspicion.
  • Have a computer forensic expert gather a complete image of the computer. This is more involved that just copying the hard drive and all files. A full image of the computer can potentially reveal what has been deleted, what search terms used and more. At your court date a judge will rule whether this evidence is admissible. If the judge rules in your favor, the complete computer image can then be entered into evidence. The computer hard drive image can then be analyzed. Consult with an attorney for the particulars regarding the law.
  • Select the best opportunity to collect data. Computers and other electronic equipment have very large data capacity. This increases your chance of recovering useful information, but it also potentially takes a much longer time to gather a full image of the computer. The best case would allow enough time to remove the main disk from the computer and transport it to the forensics lab for duplication. Once copied, it can then be returned. The second choice would be to collect the information on site, but this can take many hours to complete and be more expensive.
  • Provide your forensic analyst with key words that will help in the search for evidence. The more you know about the information you need, the easier it will be to find on the source. For instance, a name, email address or hotel name could be the difference between a long exhaustive search and finding evidence quickly. If you are working with a private investigator, he or she may be able to help you to develop key words to help narrow your search.

 

If you suspect your partner or spouse is cheating on you or you need to prove marital infidelity, company espionage, disgruntled employee trying to sabotage your business, you need to take immediate action to capture and preserve the evidence. A computer forensics investigation can help you take the steps to collect the evidence you may need to protect yourself, your family or your business and document to prove your case.

Why use Python?

Python

Python is a high-level programming language which can be easily mastered by the person who is proficient in any of the computer languages. Here is a list of some points which will influence you to use this programming language:

 

  1. Easy to install and learn

It is relatively easy to install and run this language on your system. Linux, UNIX and HP suppliers already deal in Python installed computers. If you are new to this language, you can rely on online sources which will provide you step-to-step details of using Python in an effective manner. It is less complex than other programming languages including Java and C++. Python has various communities which hold sessions to make kids and unfamiliar persons well informed about it.

  1. Creation of a Web application

If you want to develop a web site of your own, Python is the most appropriate source you can opt for. For security purposes, it can be used for coding a particular thing in any language you want. Due to the availability of specific rules, you may have a clearer idea to design codes.

 

  1. Libraries

If you are looking for some specific application or a library ensuring proper functions, you can get the relevant information at Python Package Index (Cheese Shop). You can use the libraries section by transferring your documents conveniently.

 

  1. Minimizes chances of bugs

Due to presence of limited codes, it is easier to use and minimizes the chances of errors. Being easily maintainable, Google has declared Python one of its official programming languages. The security and uncomplicated guidelines make it easier to use Python smoothly.

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  1. Large scope

It is dynamic in nature as its functions can be modified with respect to different industries. It plays a vital role in functioning of websites, administrations, organizations and desktop apps. Being a general purpose language, it caters to meet the requirements of all applications.

 

  1. Decreases time-to-market

Being a flexible language, Python is being used by most of the organizations to formulate those applications which are critical to the performance of their business. With python, it is possible to get applications built quickly, with the help of its big library.

 

  1. Reduced burden

Python offers you one or a few possible solutions to your problems and ensures that you can easily get the relevant answers. It reduces your mental pressure as you can do more tasks in relatively lesser time.

 

  1. Readability

Codes in Python are very readable, as it a lot like the English language. Reading the code doesn’t just seem like you are reading a programming language.

 

Python, which offers elegant syntax & dynamic typing in addition to above mentioned features, makes an ideal language for scripting purposes and for Rapid Application Development. It provides constructs which make programming simpler on both small & large scale. It is used extensively in today’s time and many biggies like Google, YouTube and Instagram rely on it.

Why selecting a competent data recovery company is critical?

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More data is lost by well-intentioned recovery attempts than is ever lost from the initial problem. Googling DIY videos and/or letting your neighbor’s cousin who works on computers check it out can make the difference between recovered and unrecoverable. Knowing how to differentiate which situations call for a professional and which don’t, is the key.

Ten years ago there were only a handful of data recovery companies in Canada. Now there are hundreds, if not thousands, of companies all claiming to be data recovery experts. While most of them are honest, there will always be some bad apples. It’s just too easy for a company to throw up an impressive Web site and start luring in data recovery cases. The amount of fraudulent and dishonest operators has reached epidemic proportions and the scams are as varied as the artists that perpetuate them.

One of the worst tactics employed by many so called “data recovery companies” involves charging for evaluations. These companies operate by bringing in as many recovery cases as possible by promising ridiculously low pricing and unrealistic recovery times. Once the cases arrive they quickly screen them for the easiest cases, those can be completed with minimal labor and zero parts. These cases are reported as being recoverable and most will be approved for additional recovery fees, while the remaining tougher cases are declared unrecoverable but still invoiced for the evaluation. This is a real disservice to anyone in dire need of their data and, in our opinion, borders on criminal. A competent data recovery company should not need to charge for evaluations or quotes!

Some “data recovery companies” will use the same scheme with a twist: evaluations are free but there is a “recovery attempt fee”. You got it; they only seem to recover the simpler cases, while the tougher stuff is declared unsuccessful. Even an honest company using this pricing scheme will be tempted to throw in the towel a lot sooner than a company that must be successful to get paid. A reputable data recovery company should not charge you for attempting to recover your data!

 

Refrain from the temptation to use the lowest cost service. You really do get what you pay for. Providing a competent and first class data recovery service demands an investment in high end, expensive equipment and plenty of parts.

Internal work on crashed hard drives can quickly consume two or three parts drives before the data is salvaged and parts suppliers love to charge recovery companies huge premiums for their non-current hard drives. It’s expensive for a good recovery company to just try and recover your data. Reputable and honest recovery companies do not try and mislead people with “too low to be true” recovery pricing.

Even with the best backup policies, self-healing RAID arrays, and the reliability of SSD or Solid State Drives, data will be lost. As long as humans continue to interact with computers, mistakes will be made, accidents will happen, and buttons will be pushed that cause catastrophic data loss. Selecting a reputable data recovery service provider may be the most important thing you can do for your clients, so choose wisely. Look for real review like Google, Yelp, etc. Do your research before you trust your most valuable data to just anyone.