The American singer who was harassed by Singaporean Colin Mak Ye Loong for six years had made public her ordeal several times.

In 2012, Ms Leandra Ramm, 29, wrote a book about it titled Stalking A Diva, which is available as an e-book and print-on-demand.

In it, she shares her family history and details the threats that Mak sent her. Many of the messages were abusive and sexually explicit in nature.

Her ordeal was also the subject of an episode of the TV show My Life Is A Lifetime Movie in November 2012.

Another series, Obsessions: Dark Desires on the Discovery Channel, will also feature the cyber stalking she endured.

On Wednesday, Mak, 38, was convicted of criminal intimidation, harassment, criminal trespass and theft in Singapore.

He admitted to sending 31 threatening e-mail messages to Ms Ramm, 29, and her boyfriend.

He had seen her after she was featured in 2005 on Anderson Cooper's 360 programme on CNN, and he harassed her for the next six years.

They had never met but he contacted her, promising to further her music career. Initially, she was grateful but when she stopped responding to him, he started sending her threatening e-mail messages and telephone calls. It continued right up to 2011 when US authorities sought the help of the Singapore police.

The court also heard that Mak harassed two other foreign musicians. He will be sentenced on Dec 13.

Ms Ramm sings mainly in theatre and opera performances, according to her website. She has also released several music albums. The singer's Wikipedia page says she is an offspring of the Repository for Germinal Choice, a sperm bank nicknamed The Genius Sperm Bank because of its reputation for accepting donations from only highly intelligent men. The Wikipedia article also chronicles her brush with cyber stalking.

News media outlets have covered Ms Ramm's case over the years, including The Economist magazine, which reported that she received little help from the American police.