Luka has been asked by his supervisor to monitor the dark web for any IOCs concerning their organization. The next week, Luca reports back that he was unable to find anything due to how looking for information on the dark web is different from using the regular web. Which of the following is not different about looking for information on the dark web?

a$.$ The naming structure is different on the dark web.

b$.$ Dark web search engines are identical to regular search engines.

c$.$ It is necessary to use Tor or IP$2.$

d$.$ Dark web merchants open and close their sites without warning.