The phrase "a security briefing" is correct and usable in written English.
It can be used when referring to a meeting or document that provides information about security matters, often in a military, governmental, or corporate context.
Example: "Before the mission, all team members were required to attend a security briefing to understand the potential risks involved."
Alternatives: "a security update" or "a security report".
Today the UNHCR released a security briefing revealing, "There are only 40 police officers deployed to secure six of the 31 camps in the province".
"We had a security briefing at lunch time.
In a security briefing to a parliamentary committee, the intelligence chief, Maj.
They want him to steal information from Estes' safe during a security briefing.
The Turkish prime minister, Ahmet Davutoğlu, cancelled a trip to Brussels to attend a security briefing.
Capitol security agencies are planning to join the F.B.I. on Wednesday in a security briefing for members of Congress.
Cultural commentator Norman Lebrecht quickly went on the offensive: "Karen Bradley, who succeeds John Whittingdale as secretary for culture, media and sport, is a former tax manager who held a security brief in the home office.
The embassy and the local police coordinated to provide security at each hotel, and the team and the traveling journalists received a stern security briefing from a State Department representative after they arrived.
"There is a club meeting later this week where a full security briefing will be given.
Weeks later, during a weekly security briefing at the military base, a UN staff member was relegated from his normal seat in the main briefing room to an overflow room, receiving only audio from the meeting and being denied the opportunity to ask questions.
Leaders in both parties sought Sunday to project a nonpartisan civility, with President Obama, whose advisers were weighing the possibility of a national address, calling for a national moment of silence and the House speaker, John A. Boehner, replacing a contentious health care debate on Wednesday with a bipartisan security briefing for lawmakers.
