A clerk changed his plea yesterday and admitted publishing 84 pictures of female stars in sex acts with entertainer Edison Chen Koon-hei by posting hyperlinks to them.
He was warned he would probably go to jail.
Kwok Chun-wai, 24, is one of three people charged in relation to the celebrity nude pictures scandal that gripped the city early this year.
With the support of his parents and friends, Kwok appeared calm when he pleaded guilty in Kowloon City Court to three counts of publishing an obscene article by posting the internet links on January 29 and February 6.
He originally denied the charges in another court on June 3.
Principal Magistrate Andrew Ma Hon-cheung said he would likely impose a jail sentence, noting the offences were serious and had occurred on several occasions.