It is difficult to efficiently transfer information between networks having different levels of security classification.

Their motivation is quite clear, he said: to get into a lower security classification.

Everything I am about to tell you has the highest security classification.

"Create a whole new level of security classification just for this, "the Central Intelligence director said.

The information from Europe was sent and received under the highest security classification.

They also want to adopt the Scottish system on security classification of prisoners.

Arrow had sent the message under a security classification that he'd used only twice in his life, and both times to Bennett.

"It has to do with our security classification," Helen offered.

Often, these systems contain information at various levels of security classification.

This was a matter of the highest security classification.