security ratingnoun [ C, usually singular ]
ukusFINANCE, STOCK MARKET a measurement by a financial organization of the risk involved in a particular investment:
A security rating is not a recommendation to buy, sell or hold securities.
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credit rating
IT a measurement of how well particular software protects data from being seen by anyone who does not have permission:
The information includes security ratings of applications.
a measurement of how safe something is from an attack or other crime:
The planned biodefence lab requires the government's highest security rating.