Strangely, sometimes I notice a foreign/unidentified entry in the network's list of "Top Posts / Pages". The ranking page is not part of the network nor does it appear in the source list on Google Analytics.
You can see a screenshot cut-out on http://status301.net/wp-content/uploads/2015/02/Schermafdruk-van-2015-02-20-212125.png where the entry I'm talking about is number 8 with that very spammy name. The entry points to an external domain that is NOT part of the network.
For completeness, http://status301.net/wp-content/uploads/2015/02/Schermafdruk-van-2015-02-20-220755.png is the list as shown on Google Anlaytics.
I've noticed some weird entries before but this time it is clearly SPAM. I've never seen them in individual site lists, only in the network pages list.
How can these rogue entries get in there?!?