Attack on data always happens without the person involve realize about it. This is why data encryption is important. Data encryption using asymmetric key is one of the most trustable data security algorithm. When the sender wants to send data or message, data encryption will change the data to an indecipherable state by using algorithms or theorems. Data encryptions are initially used by the authority military to communicate with each other during the old days. Nowadays, data encryption has become more recognized and people use it publicly. Diffie-Hellman Key-Exchange idea is that individual can exchange keys openly while ensure privacy (Mollin, 2007). Such as, one for encryption that opens for public and one for decryption to keep private. …show more content…
A digital certificate is a document or files that are used to prove the identity in sender in communication over internet. Digital certificate also enables secure and confidential communication between two parties (Macphee, 2001). The digital certificate includes the information about the owner of the certificate, the public key of the owner of the certificate, the period of validity of the certificate, the name of the issuer (the CA that issued the certificate), the serial number of the certificate and the digital signature of the issuer (Kovinic, 2011). In this stage, the process is known as cryptanalysis which the private key is related to the public key in the digital certificate. The certificate holder has to hold the private key securely. The digital certificate operates when the sender wants to send the message or data would request the receiver’s digital certificate which contains the public key from the original source. During this stage, private key is used to encrypt the message or data before sending to the receiver. After that, the encrypted message can only be decrypted by receiver’s public key. According to Kovinic (2011), the data contains in the digital certificate are digitally signed and then confirmed by the Certification Authority (CA). The responsibility of Certification Authorities is issuing the certificates associated with a key pair to a user whose identity it has already verified and it represents a true authority trusted by all the person who takes part in the communication. When the information of the digital certificate and issuing the certificate are done, then the digital signature proves a communication originated from a particular sender and has not been manipulated or attacked from third party. The digital signature is a mechanism for solving the message-authentication problem with asymmetric keys (Bellare & Rogaway, 2011). (Stallings, 2005)
4.7.5 Data Preservation and Isolation from the Network. The main purpose of a digital forensic report is to keep the data integrity, avoiding any type of data alteration, in order to present valid evidences, for instance in a court. The use of not valid software to check the stored information in a mobile phone can alter these information. The action of receive new data can alter the information stored, for instance an automatic firmware update, or remote device control with the risks involved. Therefore, it is extremelly important have the device completely isolated from the network.
This quote is said by General Dwight D. Eisenhower. “This operation is not being planned with any alternatives. This operation is planned as a victory, and that’s the way it’s going to be. We’re going down there, and we’re throwing everything we have into it, and we’re going to make it a success.”. D-Day was an enormous battle that was super important to WWII.
“The special properties and technical complexity of digital evidence often makes it even more challenging, as courts find it difficult to understand the true nature and value of that evidence (Boddington, 2015)”. It’s not uncommon for innocents to be convicted and guilty people acquitted because of digital evidence (Boddington, 2015). However, other factors can also affect the validity of the evidence, including: failure of the prosecution or a plaintiff to report exculpatory data; evidence taken out of context and misinterpreted; failure to identify relevant evidence; system and application processing errors; and so forth (Boddington, 2015). “There is a perception, largely undeserved, that digital evidence somehow alters the true nature of the original evidence and is therefore unreliable. Presented properly, digital evidence is capable of being of tremendous assistance to the courts (Hak,
With the introduction of new technology in recent years, the government can discreetly capture evidence from electronic files,
1. [100 pts] Refer to the Chapter 3 of DHS IT Security Essential Body of Knowledge Main Text (See DHS EBK_MainText_nps36-010708-07.pdf in Resources folder). Pick ONE competency area from EBK (data security, digital forensics, risk management, etc.) and provide the definition of each key term listed under that competency area. You can use the definitions provided in the textbook or search them from other sources. I have chosen the digital forensics competency area and the definition of each key terms as listed in the textbook are as follows:
The encryption key (public key) does not have to be secret and anyone can use it to encrypt data. However, the corresponding decrypted key (private key) is known to a single entity that can decrypt data encrypted with the encryption key. When we need to send an encrypted message to someone else, we first obtain the person’s public encryption key and transform the message with it. Only the recipient knows the corresponding private key. The recipient can decrypt the message.
Student Name: Keshab Rawal Student ID: 77171807 Word Count: Title: The rise of anti-forensics: The rise of anti-forensics: Tables of contents: • Overview • Introduction • History • Categories/Tools of anti-forensics • Conclusion • Future Work Overview: Computer forensics is an active topic of research, with areas of study including wireless forensics, network security and cyber investigations. The goal of the computer forensics is to provide information about how the crime happened, why and who is involved in the crime in any legal proceeding by using the computer forensic tools.
Cryptography is a technique or method to secure personal data from unauthorized user. In cryptography two types of operation are performed. (i) Encryption and (ii) Decryption. To encrypt and decrypt data a secret key is used. After encryption original data is converted into another format known as cyphertext, which is not easy to understand.
We need people to enforce and obey the law in order to make this a better and safer place to live that is why I believe that law enforcement is a very important. The men and women who go out there every day and put their lives on the line for something bigger than oneself are true heroes. They understand the commitment and courage that it takes to protect our community. Keeping this city safe for me is a big priority. This is the place that i chose to call home, the place where I chose to raise my children.
1-What is the difference between a threat agent and a threat? A threat is a constant danger to an asset, whereas a threat agent is what facilitates an attack. 2-What is the difference between vulnerability and exposure? Exposure is a condition of being exposed and it exists when a vulnerability is known to an attacker while Vulnerability is a weakness or fault in a system or protection mechanism that opens it to attack or damage.
Technology is growing at a fast pace and every day we see a new product or service that is available. Many times it is hard to even keep up with the latest phone, computer, game console, or software. There are so many different gadgets to choose from and even the internet is on information overload. As a result, we can no longer truly expect to have privacy.
Cryptography basically makes any transaction secure between two parties. Security is very important, because every person with Bitcoins, their Bitcoins, and every transaction is logged to a public ledger visible by every computer on the
Computer forensics is also commonly referred as “cyber-forensics or digital forensics” by various individuals, authors of books and also information security professionals. The goal of
Communications Technology Introduction In this essay I am going to discuss the current and relevant issues of many communication technologies and their uses also the different types of communications technologies that are used in everyday life. Their advantages and disadvantages along the lines of how they affect our personal and professional lives. I will also touch on the health and safety communications legislation and its roll in modern life. Current and relevant issues in Communication and Information Technology
Safety of our citizens is of utmost importance in creating a robust society. Building sustainable communities that are inclusive, secure and sensitive to needs of the citizens will continue to be of national priority. However, over the years, crime has stymied this endeavour. There must be a commitment to ensuring safety, security and justice for all citizens, which are seen as moral rights and intrinsic to development. Good policing, targeted social interventions and an efficient judicial system are needed to help our nation thrive.