When Jon Venables and Robert Thompson were released from prison in 2001 for the murder of James Bulger, they were given new identities.
Protected by a strict court order, it bans the publication of any information or images that claims to identify them.
The terms of the order mean that if a picture claims to be of Venables or Thompson, even if it is not actually them, there will be a breach of the order.
The court order applies to media organisations and individuals.
In recent months however, photographs claiming to show Jon Venables as an adult have circulated on social networking sites.
A case has been brought by the Attorney General, Dominic Grieve, against two men accused of posting an image which claimed to show Venables on Twitter and Facebook.
If prosecuted, they could face a possible fine or a jail sentence.