The Dutch man accused of sexually extorting B.C. teenager Amanda Todd online used upwards of 90 screen names to target more than 75 victims around the world, according to a Facebook security report revealed in a new documentary by CBC's the fifth estate.

The fifth estate has also learned Canadian police have opened investigations into 10 of those potential victims here, including that of Amanda Todd.

Todd was tormented online for nearly two years after she flashed a crowd by webcam on a live streaming chat site. An online stalker did a screen capture of that and circulated the image to her family, friends and classmates.

Watch the full fifth estate documentary "Stalking Amanda Todd: The Man in the Shadows" on Friday at 9 p.m., 9:30 NL on CBC Television.

The 15-year-old eventually committed suicide in her mother's Port Coquitlam, B.C., home on Oct. 10, 2012. Her plea against cyberbullying, filmed a month before her death, went viral.

In January 2014, working on information provided by Facebook, police in the Netherlands charged 36-year-old Dutch national Aydin Coban with luring a child under 18 via the computer, extortion and harassment, as well as importing, distributing and possessing child pornography.

Coban has yet to stand trial and none of the charges has been proven in court. Until now, not much was known about the accused stalker, including his alleged interactions with Todd.

Todd was the only known victim of the accused stalker in Canada.

But when asked by the fifth estate about information it had obtained that there were several more victims here, the RCMP confirmed in an email there are 10 cases they have been working on.

"All have been contacted by local police to ensure the victimization isn't ongoing," the RCMP told the fifth estate. "Investigations are ongoing, so we cannot provide further details."

The RCMP later confirmed that the 10 Canadian cases being investigated include Amanda Todd.

'Targeted by the sextortionist on Facebook'

Working with the Dutch TV program Zembla, the fifth estate has obtained information about the suspect from Facebook's report.

"An unidentified person ('the suspect'), operating at least 86 forensically linked Facebook accounts under presumably false identities, is responsible for the solicitation, creation and distribution of child exploitation images and videos, as well as the blackmailing of dozens of minor females from around the world," the report states.

The document identifies Todd as one of the suspect's victims, saying the teen committed suicide as a result of the long-term bullying and humiliation.

Amanda Todd video story

The YouTube video was widely shared after Todd's death and prompted a wide debate about cyberbullying. In it, Todd told the story of how she was lured and sexually exploited over the internet, and the deep embarrassment and depression that provoked. (YouTube)

"She was targeted by the sextortionist on Facebook, YouTube, several web camera chat sites and other platforms."

The suspect was using more than 90 different screen names and investigators found he had targeted more than 75 individual victims from around the world.

"The suspect is highly skilled in identity obfuscation and consistently uses proxy IP addresses, clean session cookies and disposable email addresses and online handles to make contact with his victims and their friends," the report says.

Among the many aliases the suspect used in his communications with Amanda and her family were names like Tyler Boo, Austin Collins and Alice Mcalister.

'A certain level of sophistication'

Stephanie Morgan, a Kingston police detective constable and member of the Ontario Provincial Police Integrated Child Exploitation Unit, says while investigators are forging ahead to track down online tormentors, it's difficult to keep up with offenders.

Morgan was shown the Facebook report by the fifth estate's Mark Kelley.

"[The suspect is] using different email address, he's using different websites, he's using all kinds of different applications on the internet," Morgan says.

"He's using proxies to cover his IP address. He's doing a lot of things to help cover his tracks and so it shows a certain level of sophistication."

The Facebook report identifies messages as far back as 2011 that show Todd was a target of the suspect.

The document states it's unclear whether or not the suspect was responsible for the initial nude content he used to blackmail the B.C. teen, but messages show he did send out her topless photo to her friends, family and classmates.

Carol Todd

Carol Todd, Amanda's mother, has been speaking to groups and other parents about the dark side of social media. (CBC)

Facebook didn't know who the stalker was, but it did know he was in Holland after linking several of his accounts to an IP address. After connecting the dots, Facebook forwarded a copy of the report to Dutch police.

In September 2013, armed with that information, Dutch police began their investigation into Todd's stalker.

Coban remains in custody in the Netherlands following his arrest in January 2014 in a trailer park in the southern city of Oisterwijk.

Clarifications

  • This story was updated to include later confirmation from the RCMP that Amanda Todd was among the 10 Canadian cases being investigated.
    Dec 05, 2014 12:44 PM ET