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digital evidence is the process of uncovering electronic data, while the goal is to preserve any type of evidence in its whole form and preforming an organized investigation by collecting the digital information

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just to name a few!
1) recovering a large amount of data in a timely manner
2) legitimacy of the evidence
3) valuable sources that you're not allowed to use
4) privacy of victims or organizations
5) encryption
6) data hiding in storage space

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chain of custody is documentation details of each person who has handled the evidence, the date and times it was collected or transferred. Here are the steps !
1) data collection
2) examination
3)analysis
4)reporting
5)and the time it was presented in court

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when evidence is preserved it means that it  isolates and protects  digital evidence exactly how its found without any alteration and so it can be analyzed later on, here are some ways that digital evidence is preserved
1) document the condition of the device
2) dont alter the power status
3) keep the device secure, and establish and internal chain of custody
4) do not get IT to reallocate the device

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encryption is a way of mixing up data so that only certain people can understand the information...its kind of like a code. in another term its the process of converting human-readable plain text to incomprehensible text.

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heres a list that digital evidence may be presented!
1) audio enhancement
2)photographs
3) forensic videos
4)latent fingerprints

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Luka Magnotta is Canadian killer that got caught based on him posting videos online of his crimes.

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it first all started was when some person posted a video of the person putting 2 kittens into a zip lock seal bag and suffocated them to death. The people on social media did not like this. He later on keeps posting videos with cats in them that get even more graphic and the audience get madder. in the year 2012 in may he did what most people would believe to happen. Luka Magnotta Murdered someone.

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Luka Magnotta got charged with the following
- first degree murder
- committing an indignity to a human body
- publishing obscne material
- criminally harassing Prim Minister Stephen Harper
- Mailing obscene and indecent material

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Luka Magnotta talked to a psychiatrist and said "the voices instructed him to kill Jun Lin amid his own fears the Chinese student was a Canadian government agent who had been sent to slay him" he also said "something forced me to do it" he posted "one lunatic one ice pick" to get rid of the voice not knowing thats what messed him up

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-surveillance video
- video recording of the crime

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Jun Lin's blood (direct) found in Luka's apartment
wine bottle ( circumstantial)
Magnotta's sperm (direct)
Matress containins Jun Lin's blood (direct) in Luka's aparment

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Luka Pleaded not guilty saying he was not mentally okay in the time of the crimes taking place. He admitted to killing his victim but nothing else. He was given Life sentence with no possibility of parole for 25 years. In he courtroom Luka did not really show his face he kept his eyes down. However when they were showing the video of him killing ... he passed out!

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Life sentence without possibility of parole for 25 years

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Digital forensic is kind of how the internet is to humans we really wouldn't be far with out it. So many things can be caught just by posting something. Digital forensics is the science of investigation just like how we explore new things everyday and change everyday so does science and for this instance forensic changes everyday just by new software coming up. The rules in the courtroom change throughout the years. Privacy laws have changed. You cant just see someone post online and take them to court you have to be very detailed and very careful because, as we all know everything on the internet is NOT real.