From this reference in the article... http://www.reuters.com/article/us-kaspersky-rivals-idUSKCN0QJ1CR20150814 http://www.reuters.com/article/us-kaspersky-riva

From this reference in the article... http://www.reuters.com/article/us-kaspersky-rivals-idUSKCN0QJ1CR20150814 http://www.reuters.com/article/us-kaspersky-rivals-idUSKCN0Q... "Microsoft's antimalware research director, Dennis Batchelder, told Reuters in April that he recalled a time in March 2013 when many customers called to complain that a printer code had been deemed dangerous by its antivirus program and placed in "quarantine." "Over the next few months, Batchelder's team found hundreds, and eventually thousands, of good files that had been altered to look bad." "Batchelder told his staff not to try to identify the culprit" This last part seems incredibly suspicious.. perhaps it was Microsoft trying to discredit Kaspersky