While many said they felt secure on campus, some expressed concern about security in the neighborhoods surrounding it, where some students prefer to rent houses.
Some investors have expressed worries about security at Web banks.
After spending a night elsewhere, they moved back to the Cocos Beach but expressed concern about security.
Earlier this year, Williams expressed concern about security in Athens but she cited only her injury in explaining her withdrawal.
He said the director of Exxon Mobil's operations in the province of Aceh, which is rich in natural gas, had recently expressed worries about security outside his plant.
Mohamed ElBaradei, the head of the atomic agency, first expressed concern about security at Tuwaitha on April 10, the day after Baghdad fell and widespread looting began.
The report accuses the State Department of being complicit in the problems, citing numerous letters in which the agency expressed concerns about security deficiencies at the American mission in Kabul and threatened to terminate ArmorGroup's contract.
Despite North Korea's recent agreement to suspend its missile development program in exchange for the United States' lifting of sanctions, Mr. Slocombe expressed concern about security risks to the region, the officials said.
But following a series of what appear to be racially motivated assaults, several students at the campus in Egham, Surrey, have expressed concerns about security, accommodation, and what they describe as a culture of isolation within the college.
