phone hacker - definition and synonyms

noun [countable] British 

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/ˈfəʊn ˌhækə(r)/
singularphone hacker
pluralphone hackers
  1. someone who listens illegally to the calls or messages on another person’s phone, especially by accessing the voicemail without their knowledge or consent. Phone hackers are often simply called hackers

    He believes he and his father were targeted by phone hackers working for news organisations.