This chapter examines how the evidence of violent extremism online is used in the criminal trial to convict individuals for offences under the counterterrorism laws. In the Benbrika trial, accessing violent extremist materials online was said to constitute preparation for terrorism because those resources served a training and motivational purpose within the organisation. The Elomar trial, evidence of violent extremism online played a key role in delivering severe sentences of around 25 years' imprisonment when the defendants had not yet decided on the details of their plan. In particular, what emerges from these trials is that individuals are not simply prosecuted for possessing extremist and instructional material they have downloaded from the Internet. The evidence of violent extremism online was still significant, as it is unlikely that the prosecution would have succeeded in proving a conspiracy without the online material to demonstrate a shared mindset' between the offenders.