"These actions are a major breach of internal policies and regulatory rules."

That was a major breach of security, not to mention good sense.

Schlegel shrugged at what most people in the department would have considered a major breach of security.

That would be a major breach of private information from any firm.

Failure to make the goods available in a contract of sale is a major breach.

The aide continued, "This is a major breach of security."

"This is a major breach of departmental policy," he said.

Federal officials reported no genuine major breaches of security today.

To use a computer access for a liaison is a major breach of regulations.

I think this is a major ethical breach; he disagrees.