Ahead of the IT, finance, legal and sales departments, the results also showed over a third (36 per cent) of marketers said they have shared confidential information about their colleagues.
However, only two per cent of respondents said they would turn to marketing professionals for confidential information about the business.
Christian Toon, head of information risk at Iron Mountain Europe, said: “The study reveals a worrying correlation between employees with the greatest access to confidential information, and a willingness to share that information with colleagues.
“Gossip and a genuine personal interest in our fellow workers are inevitable but companies would be well advised to develop and implement clear policies that inform employees on what information can and cannot be shared. What may seem like coffee chat in the office could soon be shared outside the business when employees clock off.”