From the Glinner article:
You might think that their expertise involved helping convict paedophiles, but in 2003 the company came to local prominence for defending British people who the FBI had claimed had bought pictures of child abuse online. Backed by its own software, Fields Associates stated that many of the accused could have purchased pornography that wasn’t illegal and while their hard drives did have images of child abuse on them, they might not have ‘knowingly’ downloaded those images.
He appears to be referring to Operation Ore. Many people including journalists, politicians, people with backgrounds in law enforcement and forsensics, have been concerned for a long time that Operation Ore was, in the case of a number of those prosecuted, a massive miscarriage of justice. I think Glinner should have looked more into the background of this before publishing his article.