B@TB0!D v01ds33k0r looks at the servers and other elements that make up the DeepLink Cooperative. At its core the system is a storehouse of metadata about various locations in the WorldNet. A vast majority of the data is normal everyday information that is public. There are also internal discussions of the cooperative members that merit more examination.
Lastly, there are huge number of saved connection points (essentially a way to quickly access the system) several of them are either broken or lack user information. You are pretty sure you could trace back to their origin and maybe discover more about now missing and unknown users that have disappeared.

<17 results of 32 were a success! Some extra information was found during the Intuit Architecture skill check.>

B@TB0!D v01ds33k0r keen senses reveal some faint traces of other connections made around the time of Castor's disappearance. Recovering anything useful will be difficult, but it may result in an important clue.

Option 1: Run a trace program on the broken saved connections in order to find some information on the erased DeepLink Cooperative users.
Option 2: Try to look through the various records and posts for information about the erased DeepLink Cooperative users. (Data Analysis skill check, remember its untrained using 1d10, but some information will automatically be revealed).
Option 3: Use data sort program to look through the various records and posts for information about the erased DeepLink Cooperative users.
Option 4: Use recovery program to reconstruct connections made and partially erased near the time of Castor's disappearance.