1_4_9 Section 1 – Attacks, Threats, and Vulnerabilities - 1.4 – Network Attacks - DNS Attacks
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Questions and Answers

What is one way attackers can manipulate a DNS server?

  • By updating antivirus software
  • By configuring a VPN
  • By poisoning the DNS server (correct)
  • By using a firewall
  • How can attackers modify DNS information on a legitimate DNS server?

  • By using a VPN connection
  • By updating the DNS resolver software
  • By launching a DDoS attack
  • By modifying the host file on individual devices (correct)
  • What does the host file on a machine do in relation to DNS queries?

  • It blocks all DNS queries
  • It accelerates DNS queries
  • It randomizes DNS queries
  • It takes precedence over DNS queries (correct)
  • How can an attacker redirect traffic to their website using DNS poisoning?

    <p>By manipulating the IP address in DNS queries</p> Signup and view all the answers

    In DNS poisoning, what role does the attacker play in altering a query?

    <p>Sitting in the middle and modifying the query</p> Signup and view all the answers

    What can an attacker achieve by changing the IP address of a domain in DNS?

    <p>Redirecting users to a malicious website</p> Signup and view all the answers

    What can an attacker do if they purchase a domain name similar to a legitimate one?

    <p>Try different phrasings of the domain name.</p> Signup and view all the answers

    How can a company's email reputation be negatively affected?

    <p>Having users mark their emails as spam.</p> Signup and view all the answers

    What might happen if malware is present on a company's web server?

    <p>Search engines will warn users about malware on the site.</p> Signup and view all the answers

    How can a company prevent damage to its email reputation?

    <p>Monitoring the reputation of its email IP address.</p> Signup and view all the answers

    Why would an attacker want to trick users into visiting a fake website?

    <p>To gain access to sensitive information.</p> Signup and view all the answers

    What happens to a website's reputation if it is found to contain malware?

    <p>The site is flagged as unsafe by search engines.</p> Signup and view all the answers

    What can an attacker achieve by modifying the DNS configuration files on a DNS server?

    <p>Redirecting users to incorrect IP addresses</p> Signup and view all the answers

    How did attackers maintain control of the domain information for a Brazilian bank during the domain hijack?

    <p>By redirecting users to the hacker's website</p> Signup and view all the answers

    What type of attack involves creating a domain name similar to a legitimate one to redirect users to different pages?

    <p>URL hijack</p> Signup and view all the answers

    How can an attacker convert mistyped domain names into an advantage?

    <p>By creating phishing websites</p> Signup and view all the answers

    During a domain hijack, what was the primary outcome for users who accessed the DNS server associated with the Brazilian bank?

    <p>They were redirected to the hacker's website</p> Signup and view all the answers

    How does an attacker use a mistyped domain name as an opportunity for profit?

    <p>By selling the mistyped domain name to the legitimate owner</p> Signup and view all the answers

    What is a possible consequence of an attacker gaining access to a registrar's account in charge of domain configurations?

    <p>Redirecting users to incorrect IP addresses</p> Signup and view all the answers

    Which method would an attacker likely use to redirect traffic from one company's site to its competitor?

    <p>Registrar phishing attacks</p> Signup and view all the answers

    What is one method that attackers can use to perform DNS poisoning?

    <p>Modifying the host file on individual devices</p> Signup and view all the answers

    How can an attacker redirect traffic to their website through DNS poisoning?

    <p>Sitting in the middle of a conversation with an on-path attack</p> Signup and view all the answers

    In DNS poisoning, what role does the host file on a machine play?

    <p>Overriding DNS configurations stored on the DNS server</p> Signup and view all the answers

    Which attack method involves an attacker modifying a query being sent to a client?

    <p>Man-in-the-middle attack</p> Signup and view all the answers

    What is the purpose of an attacker changing the IP address in a DNS query?

    <p>To redirect traffic to the attacker's website</p> Signup and view all the answers

    How does sitting in the middle of a conversation help an attacker with DNS poisoning?

    <p>It enables them to modify DNS queries in transit</p> Signup and view all the answers

    What could be a consequence if a company's email reputation is tarnished?

    <p>The ability to send emails to users may be limited or restricted.</p> Signup and view all the answers

    How can malware on a company's web server impact its reputation?

    <p>Search engines will warn visitors that the site contains malware.</p> Signup and view all the answers

    What action can companies take to monitor their email IP address reputation?

    <p>Constantly check and monitor their email IP address reputation.</p> Signup and view all the answers

    Why is it crucial for companies to be aware of the reputation of their email and web servers?

    <p>To avoid limitations on sending emails and warnings about malware.</p> Signup and view all the answers

    What could happen if a user unknowingly visits a website with malware present on its server?

    <p>The user's browser will display a warning message about malware.</p> Signup and view all the answers

    Why is it challenging for a company to recover from having malware on its web server?

    <p>Removing the malware does not immediately restore the website's reputation.</p> Signup and view all the answers

    What is the primary method an attacker might use to modify DNS information on a legitimate DNS server?

    <p>Gaining access to the domain registrar's account</p> Signup and view all the answers

    How could an attacker potentially redirect users to a competitor's site using domain names?

    <p>By creating domain names that are similar to the competitor's domain</p> Signup and view all the answers

    In what way can an attacker use a mistyped domain name for their advantage?

    <p>Installing malicious software by intercepting mistyped URLs</p> Signup and view all the answers

    What technique did the attackers use during the Brazilian bank domain hijack to maintain control of the DNS information?

    <p>Modifying the registrar's account details</p> Signup and view all the answers

    How did attackers redirect users to ad-filled pages instead of legitimate websites through URL hijacking?

    <p>Creating URLs with common typos or misspellings</p> Signup and view all the answers

    What potential threat arises if an attacker gains access to the email associated with a domain registrar's account?

    <p>Changing MX records to divert emails</p> Signup and view all the answers

    How might an attacker impact a legitimate company's website reputation by redirecting traffic to its competitor?

    <p>Misleading users and hurting brand credibility</p> Signup and view all the answers

    Why would an attacker create domain names similar to legitimate ones?

    <p>To confuse users and redirect them to malicious sites</p> Signup and view all the answers

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