In June 2018, I came across the biography of Martin Shanahan, the CEO of IDA Ireland, the state body who brings US firms like Google and Facebook to Ireland. The bio was created by a single purpose account called Corecontent, who later disclosed they were paid by the IDA. The article was promotional, and was given a conflict of interest tag by Kudpung.
The references showed a different picture than the article did. For example, Shanahan did not have extensive industry experience prior to his appointment, and his record of attracting financial services firms to Ireland as a result of Brexit was very poor. Another user appeared, IDAComms, who attacked me and my work on other Irish tax-related Wikipedia articles, on the Martin Shanahan talk page.