"Fujitsu is sorry that its software helped send innocent people to prison".
According to a related BBC news story:
Between 1999 and 2015, more than 900 sub-postmasters and postmistresses were prosecuted for theft and false accounting after money appeared to be missing from their branches, but the prosecutions were based on evidence from faulty Horizon software.
Some sub-postmasters wrongfully went to prison, many were financially ruined. Some have since died.
It has been described as the most widespread miscarriage of justice in British history, but to date only 93 convictions have been overturned and thousands of people are still waiting for compensation settlements more than 20 years on.