If you've ever delved into Wikipedia to create an article about you or your org or even make small changes, there's a very good chance that your efforts were fruitless. You may have even had your article tagged with a big banner that lets everyone know that someone with a conflict of interest has been editing this article.
These banners will often grab the attention of Wikipedia editors whom may come at you with torches and pitchforks. They'll establish your connection to the subject and may even list your name on the article's talk page, pointing out that "<your name> tried to advertise in this holy place."
At best, you find someone willing to help you work through the issues. At worst, this issue brings bad publicity to you or your organization like it did with Florida Atlantic University and GEO Group. A multimillion dollar deal was killed due in part to one employee, on their own, editing the GEO Group article.
There are many conflicts of interest pointed out daily at the Wikipedia Conflicts of Interest Noticeboard, where "COI editors" are hung out to dry.
There are hundreds of policies and guidelines to follow when editing articles on Wikipedia. Despite all people being invited to edit Wikipedia, you can't simply jump on and make a few changes without any knowledge. You may also cause serious problem for yourself.
Learn before you edit - or hire Wiki Consulting Services.