Outsourcing firm Serco has apologised after accidentally sharing the email addresses of almost 300 contact tracers.
The company is training staff to trace cases of Covid-19 for the UK government.
It made the error when it emailed new trainees to tell them about training.
Serco said it had apologised and would review its processes “to make sure that this does not happen again”.
Contact tracing is a system used to slow the spread of infectious diseases like coronavirus. It is already being used in other countries including Singapore and Germany.
Source: BBC News