In the end, the results of a well executed and coordinated DoS attack are disastrous for targeted sites. Among targets have been companies, such as PayPal and MasterCard, as well as government sites, including the CIA's. Such attacks can cost tens of thousands of dollars for the victim, including the cost of defending against the attacks and improving security.
The following is my version of a summary of a DoS attack’s execution and its effects:
FOR COMPUTER NERDS: DoS attacks are implemented by either forcing the targeted computer(s) to reset, or consuming its resources so that it can no longer provide its intended service or obstructing the communication media between the intended users and the victim so that they can no longer communicate adequately.
FOR PEOPLE LIKE ME: They crash the damn thing.
Another kind of attack employed by hackers and hacktivists alike is Doxing. This basically, involves finding personal information about people and disclosing it online.
Doxing is a technique of tracing someone or gather information about an individual using sources on the internet. Its name is derived from “Documents” or “Docx”.
Perhaps the most famous doxing attack of the Anonymous recently was the one made pursuant to their Operation Darknet. Sometime late last year, the Anonymous resolved to declare a vigilante internet war on pedophiles. After hacking into Lolita City, a darknet website used by pedophiles to trade in child pornography, Anonymous released usernames and other information of 1,589 pedophiles trading in kiddie porn.
Nathan J. Marasigan, Entry No. 4
Anonymous declares war on Pedobear