He said adults had many opportunities to connect with young people on the internet, and they take advantage of those opportunities.
Cocker said catfish cases were unusual, and when young people get caught up in it, they often don’t know who to talk to about it.
He said it’s important for young people to seek help straight away, rather than get themselves into further trouble.
BBC News reported McCartney’s case had been described as the biggest catfish child abuse investigation in UK history in court.
The prosecutor told Newry Magistrate’s Court last month they expected to identify thousands of new victims across the world, the BBC reported.
“There is a small sample being brought forward for prosecution, which is just the tip of the iceberg,” he said.