They are seriously concerned about security.

他们非常关注安全问题。

《牛津词典》

Therefore, more and more households are concerned about security issues on the property.

因此，越来越多的居民家庭对财产安全问题十分关心。

youdao

While Russia worries about intellectual property, other countries are concerned about security.

然而俄方担忧的是知识产权问题，其他国家担忧的是安全问题。

youdao

"One of the issues that we're really concerned about is the issue of security,".

VOA: standard.2009.06.12

In the Oval Office, Prime Minister Harper said he does not worry that the Taliban could form an alternative government in Afghanistan, but that he is concerned about the Afghan government's ability to maintain security.

VOA: standard.2009.09.16

Who are these young people who are so concerned about security issues on Android phones?

FORBES: Nokia Exec: 'Youth Are Pretty Much Fed Up With iPhones'

Authorities are concerned about security since Sunni insurgents have targeted large Shiite gatherings in the past.

CNN: Mourning in Iran and Iraq for dead Shiite leader

Because market sentiment is so concerned about security at this time, share prices for many companies are likely undervalued.

FORBES: 2012 Outlook: U.S. Stocks Could Rise Next Year, But Might Be Bumpy