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Computer Security

Computer security is the prevention/detection of, and response to, any unauthorized actions by users of a computer system. Questions about security practices and principles belong here.

500 Questions

How frequent is password cracking?

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The frequency of password cracking attempts can vary depending on the individual's online activity and security measures in place. Users with weak passwords or those who reuse passwords are more at risk of being targeted for password cracking. It is recommended to use strong, unique passwords and enable two-factor authentication to help protect accounts from unauthorized access.

What is the difference between hacker and criminal?

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A hacker is someone who uses their technical skills to gain unauthorized access to computer systems or networks for various reasons, such as curiosity, ethical hacking, or testing security. A criminal, on the other hand, is someone who uses hacking skills for malicious purposes, such as stealing data, spreading malware, or committing fraud. Hackers can be legal or illegal, depending on their intentions and actions.

Are cyber criminals usually security individuals?

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No, cyber criminals are typically individuals who engage in illegal activities related to computer systems or networks, such as hacking, malware distribution, and fraud. They often lack formal training or certifications in cybersecurity.

Should a hacker go to jail?

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Whether a hacker should go to jail depends on the nature and impact of their actions. If the hacker engaged in illegal activities that caused harm, compromised privacy, or resulted in financial loss, then they should be held accountable according to the law. However, if the hacking was done ethically and lawfully as part of security research or testing, then jail time may not be appropriate.

What is a malicious insider?

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A malicious insider is someone within an organization who intentionally and actively works against the organization's interests, often for personal gain or to cause harm. This could involve leaking sensitive information, sabotaging systems, or conducting fraudulent activities from within the organization.

What life experiences might turn a trusted user into a malicious insider?

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Life experiences such as financial struggles, personal grievances, feeling undervalued or unappreciated, or exposure to criminal influences could potentially turn a trusted user into a malicious insider. These experiences may cause someone to rationalize unethical behavior or seek retribution through unauthorized actions within their organization.

What are the three phases a hacker goes through prior to attacking their victim?

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The three phases a hacker goes through prior to attacking their victim are reconnaissance, scanning, and gaining access. During reconnaissance, the hacker gathers information about the target. In the scanning phase, they look for vulnerabilities that can be exploited. Finally, in the gaining access phase, the hacker exploits the vulnerabilities to access the target system.

What is a authorisation password?

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An authorization password is a security code or passphrase that verifies a user's identity and grants access to certain systems, applications, or accounts. It helps protect sensitive information and prevents unauthorized users from gaining entry.

What other item did Uncas also reveal?

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Uncas also revealed the bracelet that Cora had given to Alice as a token of their sisterly bond.

What characterizes a DoS attack?

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A DoS (Denial of Service) attack occurs when an attacker floods a network or server with excessive traffic, causing it to become overwhelmed and unable to respond to legitimate requests. The goal is to disrupt the normal functioning of the targeted system, making it unavailable to users. Common types of DoS attacks include flooding attacks, such as SYN floods or HTTP floods, which aim to exhaust system resources and cause service interruptions.

How do you set-up ssh with dsa rsa public key authentication?

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To set up SSH with DSA/RSA public key authentication, you need to generate a key pair on the client machine using a command like ssh-keygen. Then, copy the public key to the server's ~/.ssh/authorized_keys file. Finally, make sure the permissions on the ~/.ssh/ directory and the authorized_keys file are secure (e.g., chmod 700 ~/.ssh and chmod 600 ~/.ssh/authorized_keys).

Reset password for dell inspiron 1520?

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reset password for dell inspiron 1520 As far as I know , the laptop bios password cannot be erased by battery discharging , which means u had to go to Dell After-Service for help .

How the limits of a particular electronic information system and the security level of users may affect the information that is accessible on that system?

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The limits of an electronic information system, such as storage capacity or processing speed, can affect the amount and type of information that can be accessed on the system. If the system has limited storage, for example, it may only be able to store a limited amount of information, resulting in some data being inaccessible. Additionally, the security level of users can impact the information accessible on the system, as users with lower security permissions may be restricted from accessing certain sensitive or confidential information.

What can people do to help protect themselves from computer crimes?

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People can protect themselves from computer crimes by keeping their software and operating systems up to date with the latest security patches, using strong and unique passwords for all of their online accounts, being cautious of suspicious emails and links, and using reputable antivirus and anti-malware software. Additionally, it is important to regularly back up important files and data, and to avoid using public Wi-Fi networks for sensitive activities.

How do you change your password on your email account?

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you go to your profile page and look up your account info and scrool down were your password is at .there should be a link that says change password .click the link and delate your password and put in a new password

Can people hack into your computer through minecraft?

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Almost certainly not. It uses a protocol simple enough for it to not have any vulnerabilities, and even if there would be a security hole, you're safe in singleplayer.

Concepts of hacking and cracking?

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Long answer made short: * learn what asm is (short for assembly code) * learn how to reverse engineer (get the assembly code of a program, a debugger is most commonly used) * learn a programming language basics (mainly how to read and write to memory) You can then reverse your program, find what you need to change, and create an external program to edit the part you wish to change. (otherwise known as memory hacking, or mem hacks) to crack, its the same, reverse, locate, however, you then have to permantly change part of the program. this is often done to bypass serial codes. a JE is changed to JNZ, or simply JMP.

Definition of decryption?

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decryption is the process of extracting the original information from the encrypted data.

Sample data flow diagram for super market system?

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These can be found online. You might want to do an image search for the industry or business that you want this information for.

How does asymmetric encryption provide confidentiality?

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Asymmetric encryption can provide confidentiality in two ways:

1) messages encrypted using the public key of the recipient can only be decrypted using the private key of the recipient - which only the recipient should possess.

2) It can be used as part of a negotiation process between two users to establish a temporary shared key through a process such as the following:

  • User A sends a challenge message to user B which is encrypted with user B's public key to initiate secure communications.
  • User B decrypts the message and sends the correct response back to user A encrypted with user A's public key
  • The two users are now authenticated to each other
  • At this point A can send a proposed symmetric key to B encrypted with B's private key
  • All further communications are encrypted via the shared symmetric key

In this second scenario, the asymmetric encryption only facilitates the establishment of confidentiality via the eventually shared symmetric key by securing the initial negotiations.

What are some security measures for home computers?

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Physical security measures are those which are taken to protect assets from physical theft, loss, or damage, and is not limited to computers - the concepts can be applied in any setting where security is desired. A locked door is the simplest form of physical security control, and can be layered with CCTV, explosion prevention, spikes/barbed wire on walls and rooftops, card swipes, biometric scanners, moats, vault doors, or other types of intrusion prevention systems. Automated machine gun defenses are even in place at highly secured facilities.

On a basic level, securing workstations can be accomplished through the use of cable locks, security pads affixed to furniture, and even security personnel.

How a computer hacker might do harm than office burglar?

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While a burglar can steal your physical property, a hacker can steal your personal information such as credit card details. If a burglar can steal what money is in your house, a hacker can drain your entire bank account without leaving any traces.

How do you set up a network firewall?

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You can setup your network firewall with your accessing router. consider you are using the Belkin Router : than follow these steps :

Access the Belkin router setup utility via the web browser. For doing that, browse the Internet and enter the '192.168.2.1' in the browser's address bar. Click 'Enter' to continue. On the login web page, type your router password and click the 'Submit.'

On the setup page, click the 'LAN Setup' menu in the left corner window. Now, you can see the current configuration of the firewall of the router. In Features section, check that the firewall is turned on or not.

Once you assure that the firewall is not enabled, click the 'Firewall' menu to display the firewall settings on the screen. Click the 'Enable' button to select it and then 'Apply Changes' to save your settings.

That's all process allow you to enjoy setup the firewall on the Belkin router and the safety and protection when online or offline.