The man behind the curtain…
Thursday, February 24, 2011
10:50 AM
Input data for our Pig program
time
user
action
status
subnet
2839203081L
couch
login
success
130.64.23/24
where
time is the time of the incident in seconds since Jan 1 1970 00:00:00 GMT (a.k.a. "the epoch")
user is the account in question. 
action is what they did. 
status is success or failure. 
subnet is the address block on the internet from which they tried (grouping related addresses together).