Sounds like they were just as guilty.
"The source said that the admin had been exhibiting warning signs, like failing to show up for work on a regular basis, and had copied large amounts of data onto small portable drives and smuggled them out of the office in his backpack."
Maybe it's the way it's worded, or the way I'm reading it, but someone or someones observed him complaining, missing work, and then coming in, copying "large" amounts of data, storing it ON HIS PERSON, and leaving?
I think that's more of a "warning sign"......
I'm not sure about there but here in the states, in many government facilities, you go in and out of screening everyday, and can and will have items random searched. This applies to EVERYONE coming and going.