"heightened insecurity" is a correct and usable phrase in written English.
You can use it to refer to a situation in which insecurity is more intense or palpable than usual. For example, "The people of the city felt a heightened insecurity after a series of robberies."
Worse, because of civilian casualties and heightened insecurity, some Afghans are beginning to see us as an occupation force.
Depressingly, however, the prospects of a wider peace deal remain remote; the continuing violence can only result in greater instability in the Middle East and heightened insecurity beyond.
In an essay in the weekend edition of the Financial Times, Mark Mazower, a historian at Columbia University, argued that we are witnessing a revival of nationalism as a reaction to heightened insecurity.
Both sides had accused the other of fraud following the election and months of uncertainty have damaged the economy and heightened insecurity.
The first king to use Windsor Castle as a residence was Henry I, who celebrated Whitsuntide at the castle in 1110 during a period of heightened insecurity.
The digital revolution and deepening globalization have brought greater workforce flexibility and new working patterns for some people, but they have also heightened insecurity and vulnerability for many.
That approach, they have argued, has backfired by heightening insecurity in Afghanistan.
Furthermore, the majority of new jobs are temporary labor contracts, heightening insecurity even for those who are lucky enough to find a new job.
Against this backdrop, the report warns of "heightened socioeconomic insecurity around the world".
Economists, he writes, have justified the policies that have led to slower growth, higher inequality, heightened job insecurity and more frequent financial crises.
A five-week undercover investigation by Channel 4, broadcast on Wednesday night, claimed there were harsh practices at the warehouse, including a "three strikes and you're out" policy, intense surveillance and heightened job insecurity among agency workers.
