This page lists privacy issues concerning this site.
The wiki uses a cookie that doesn’t identify individual users. The cookie is used to remember your preferences from one visit to the next. If you examine the cookie, you need to split it along the URL-encoded 0x1e byte (%251e). A typical user’s cookie might contain
username AlexSchroeder, for example. This says which username you’d like to use when editing a page. Nothing requires usernames to be unique.
In order to prevent leeching (downloading a lot of pages using a bot instead of using one of the methods listed on WikiDownload), the wiki also keeps track of the IP numbers that have visited the site in the last 20 seconds. The
visitors.log file lists IP numbers and timestamps as follows:
127.0.0.1 1390729057 1390728798 1390728798 1390728798 1390728797 1390670644 1390670381 1390670381 1390670380 1390670380
This is updated whenever somebody visits the site. This information is not public.
The wiki also tracks IP numbers whenever a page is edited. The idea is that we want to ban certain people from editing the site via BannedHosts. This information is available in multiple places.
Recent changes records IP number of authors. If you check Recent Changes, you’ll note that if you hover the mouse pointer over the author’s name, you’ll see the IP number they used. The IP numbers are removed from older log entry by the maintenance job. If you check the recent changes for the last 30 days, you should see that changes at the very bottom of the list—the changes older than 28 days—no longer have an IP number.
Every page stores the IP number that did the last edit. At the bottom of the page, you’ll see a line saying something like this: “Last edited 2014-02-05 06:54 UTC by AlexSchroeder (diff)”. If you hover the mouse pointer over the last author’s name, you’ll see the IP number they used. The IP number stays until somebody else edits the page. Thus, as long as you’re the last author to edit a page, your IP number will be available to others.
Every “kept” page stores the IP number that did the last edit. Kept Pages are the old revisions that are still available via a history page. If you check the SiteMap history, for example, you’ll see that only a small number of pages are actually kept. Again, if you hover the mouse pointer over the author’s name, you’ll see the IP number they used. Currently, kept pages older than 28 days are deleted. Thus, as long as you edited a page within the last 28 days, your IP number will be available to others, even if you’re not the last author to edit that page.
What are Kept Pages?
The details are on Oddmuse:Kept Pages. But basically, when a page is saved…
Thus, you can always go back at least 28 days.
The web server itself also keeps access log and error logs. These go back four weeks. They contain IP numbers and the URLs they requested. These log files are not public. These are used to help find configuration errors, missing redirects and the like.
The site no longer uses Google Analytics, Google Web Fonts or related services. If you want to grant a +1 to a page, you can enable the loading of the Google+ interface by clicking on the “Show +1” icon at the bottom of a page. In this case, Google will know something about you. See their Privacy Statement.
I often host images on Flickr. Whenever these pages load, Flickr will know. I’ll try to move those images back to this server.