Mr Cunningham said other top risk factors for corruption included the misuse of information systems.

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Corruption was seen as a key problem by 17% of Spaniards in the government's main "CIS" survey last December, nearly double the rate of the previous month and the highest rate by far since the term "corruption and fraud" was included in the poll 11 years ago.

CNN: STORY HIGHLIGHTS

That period also included one of the biggest corruption cases in Albany history, which sent former Democratic Sen.

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