User:Oleamm/drawbacks of dns

Drawbacks of DNS

 * Hierarchical structure (root servers), controversial to the idea of the Internet (distributed, independent, robust);
 * DNS answers can be easily falsified, no authentication of DNS data (if using no DNSSEC);
 * If there is a cache, hence we can have outdated information about the real IP address of a Domain Name;
 * Cache poisoning (http://de.wikipedia.org/wiki/Cache_Poisoning);
 * Homograph attack (changing Latin characters to Cyrillic in the Domain Name) and similar phishing techniques (like using similar characters in a Domain Name: o ↔ 0, l ↔ 1, etc).