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DNS hijacking, DNS poisoning, or DNS redirection is the practice of subverting the resolution of Domain Name System (DNS) queries. [1] This can be achieved by malware that overrides a computer's TCP/IP configuration to point at a rogue DNS server under the control of an attacker, or through modifying the behaviour of a trusted DNS server so that it does not comply with internet standards.
DNS spoofing, also referred to as DNS cache poisoning, is a form of computer security hacking in which corrupt Domain Name System data is introduced into the DNS resolver's cache, causing the name server to return an incorrect result record, e.g. an IP address. This results in traffic being diverted to any computer that the attacker chooses.
The latter case where the user is redirected to another destination would be considered DNS Spoofing, otherwise known as "DNS Poisoning". [3] DNS blocking can be applied to individual servers/IP address, or entire blocks of IP addresses for multiple reasons. Some public DNS Resolvers, like Quad9 and CleanBrowsing, offer filters are part of ...
Two common varieties are DNS cache poisoning [2] and ARP cache poisoning. Web cache poisoning involves the poisoning of web caches [3] (which has led to security issues in programming languages, including all Python versions at the time in 2021, and expedited security updates [4]). Attacks on other, more specific, caches also exist. [5] [6] [7]
MaraDNS is a free software DNS server by Sam Trenholme that claims a good security history and ease of use. [9] [10] In order to change any DNS records, MaraDNS needs to be restarted. Like djbdns dnscache, the MaraDNS 2.0 stand-alone recursive resolver ("Deadwood") does not use threads.
Windows Server 2012 DNSSEC is compatible with secure dynamic updates with Active Directory-integrated zones, plus Active Directory replication of anchor keys to other such servers. [82] [83] BIND, the most popular DNS name server (which includes dig), incorporates the newer DNSSEC-bis (DS records) protocol as well as support for NSEC3 records.
Spoofing happens when someone sends emails making it look like it they were sent from your account. In reality, the emails are sent through a spoofer's non-AOL server. They show your address in the "From" field to trick people into opening them and potentially infecting their accounts and computers. Differences between hacked and spoofed
[citation needed] Pharming can be conducted either by changing the hosts file on a victim's computer or by exploitation of a vulnerability in DNS server software. DNS servers are computers responsible for resolving Internet names into their real IP addresses. Compromised DNS servers are sometimes referred to as "poisoned". Pharming requires ...