We have been asked not to say anything for security reasons.

For security reasons, he gets a new name every day.

For security reasons, he would not say what the other information was.

For security reasons, most cannot be opened from the outside.

But for security reasons it could not be shot inside the country.

You'd want to keep that number low for security reasons.

For national security reasons, the paper was not published until 10 years later.

For security reasons, this service needs to open in a new window.

No official minutes of the meeting were kept for security reasons.

Some things need to be kept secret for security reasons.