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  24 June 2015 Last updated at 13:21 BST
  59-year-old Vivian Gabb, a pilates and tennis coach from London, was in the final stages of buying a house when the scammers struck.
  She was unaware that her email had been hacked and every email she wrote and received was being monitored by criminals.
  They sent her a message disguised as a follow-up email from her solicitor, asking for nearly £50,000 to be paid into their account.
  The internet safety advice website Get Safe Online says more than half (51%) of people in the UK have been a victim of an online crime, and 15% of people have been victims of either attempted or successful hacks of their email account.
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target: A woman has told the  Victoria Derbyshire programme how she was conned out of her life savings by scammers who sent her a 'phishing' email.