Wikipedia's revision history shows that as of Jan. 29, more than a dozen changes were made to its page about the girl's death from a computer with an IP address linked to the Defence Department.
Some of the changes are minor updates, but others are contentious revisions that include the altering of one quote attributed to Parsons' father, Glen Canning.
That quote was revised to make it appear as though Canning said his daughter had consensual sex with two boys who were later convicted of child pornography in her case.
A Defence spokeswoman issued a statement saying the Canadian Armed Forces chain of command is aware of the matter and determining whether any federal rules have been broken.
The statement says the department does not comment on ongoing investigations, but it added that employees, contractors and members of the Canadian Armed Forces are given security briefings regarding acceptable use of networks.
Parsons attempted to take her own life at 17 and was later taken off life-support in 2013. Her parents say she was cyberbullied and was pushed to suicide after a photo of one of the boys having sex with her was passed around her high school.
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