The phrase "a closed security" is not correct and may be confusing in written English.
It could be intended to describe a type of security that is restricted or limited, but the phrasing is unclear.
Example: "The company implemented a closed security system to protect sensitive information from unauthorized access."
Alternatives: "restricted security" or "limited security measures".
Two months earlier, the region was a closed security zone, to which foreigners typically could not travel without an escort and a special permit.
About four hours after the activists pitched their tents, Israeli police and border police officers drove up in two rough-terrain vehicles and served them papers, in Hebrew and with a map attached, declaring all of E1 a closed security zone for the next two weeks and prohibiting all unauthorized people from entering the area or staying there.
Within the CIS the war in Chechnya sowed distrust of Russia among most states, which resisted entering into a close security arrangement with Moscow; the exception was Kazakhstan.
Diplomats and military commanders here have already signaled an interest in maintaining a close security relationship with Iraq as it rebuilds its armed services and solidifies its fragile democratic institutions.
Last month, Baird unveiled a closer security collaboration with Egypt that includes Canadian training of Egyptian forces.
Many people in private aviation businesses said they were scrambling to close security gaps.
For too long, even the largest companies haven't done enough to close security holes.
There were 12 investigators, a chief of security, and a close protection guy that had the guns.
They spoke separately to reporters at the United Nations after a closed Security Council briefing on efforts to free the Filipino soldiers.
Last month, Facebook closed a security hole discovered by researcher Antonio Sanso, that exposed the e-mails of thousands of people.
He used to be a celebrity bodyguard, he told us, a close-protection security specialist.
