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- We've received an alert about a Brute Force attempt on this user. Based on the Windows Event Log below, please answer the following questions:1. What is the account name associated with the login failures?2. What system is this user attempting to authenticate from?3. What domain controller are they attempting to authenticate to?4. What does Logon Type 3 mean and what does that signify?5. What type of authentication was used? 6. What's the other most common Windows logon authentication?7. What do the Status and Sub Status codes mean and what does that tell us?8. Can you conclude the investigation as a likely Brute Force event or a False Positive, and why or why not?10/19/2020 01:03:38 PMLogName=SecuritySourceName=Microsoft Windows security auditing.EventCode=4625EventType=0Type=InformationComputerName=dendcprd02.client.comTaskCategory=LogonOpCode=InfoRecordNumber=261208668Keywords=Audit FailureMessage=An account failed to log on.Subject:Security ID: NULL SIDAccount Name: -Account…While using a MAC, an attacker tries to modify the Tag (the MAC) and the ciphertext in transit (message authentication code). What is likely to occur? Justify your failure, that is, why the recipient will always be able to recognize a modified Tag or ciphertext.In Zigbee networks, which data fields are encrypted to ensure both the confidentiality and the integrity of the messages? Is/are there authentication performed on a particular data field or fields? Either before or after the actual encoding of the message, the message integrity code is created.
- An attacker may decrypt the ciphertext (message authentication code) by changing the tag or the MAC. Can you identify any issues with this plan? If this attack is successful, the victim may be able to decrypt a modified ciphertext from the original Tag.How exactly will authentication help us do what we set out to do? In this part, we'll talk about the pros and cons of some of the different login methods that are available right now.The MAC is used by the attacker in an attempt to change the Tag, which is the encrypted message (message authentication code). What exactly are the possible consequences that might arise from my doing this? If this attack is successful, the victim will be able to determine whether or not the Tag or ciphertext has been tampered with.
- For attacks that use MACs, the Tag (the MAC) and the ciphertext are both targets (message authentication code). In what ways could I possibly regret doing this? Even if the attacker is successful in changing the Tag or ciphertext, the target will always be able to tell the difference.When sending a large file, which method uses less encryption operations, cypher block chaining or cypher feedback mode?And which one is much more effective?When using a MAC, an attacker attempts to alter both the Tag (the MAC) and the ciphertext (message authentication code). Is there any way to predict the outcomes if I act in this manner? If this attack succeeds, the target will always be able to spot a tampered Tag or ciphertext.
- Is it possible to encrypt the connection as well as the data from end to end? Where is the value in that? Describe an instance in which all available methods of encryption would be beneficial.An attacker attempts to alter the Tag (the MAC) and the ciphertext in transit while using a MAC (message authentication code). What would happen? Provide a rationale for why this attack will fail, that is, why the receiver will always be able to identify a changed Tag or ciphertext.Answer the question at the end of section 6, "How?" That is, recall that node2 logged into ftp on node4 and somehow node1 figured out the user password given by node2. How?