Running Google searches for specific file types

It's well known that you can search for specific file types in Google by structuring a search in this form:

filetype: pdf

This search will only return pages to which PDF images have been post.ed A search for:

filetype:mbox -site:facebook.com

. . . will exlcude hits for .mbox files on the Facebook site. A search for: "filetype:mbox site:facebook.com", will only find.mbox files on the Facebook site.

A search for:

ext: ppt

. . . will also only find files with the extension for PowerPoint, ppt. .ext is a simple variation on the filetype search.

Lumen: Database of Cease and Desist Notices

If you're looking for help responding to a cease and desist notice requesting the removal of information posted to the internet, consider consulting the Berkman Klein Center's Lumen site. The Berkman Klein Center for Internet & Society is a project of Harvard Law School. The Center collaborates with the Electronic Frontier Foundation, and the law schools of the University of San Francisco and UC Berkeley on the Lumen archive of cease and desist notices. Lumen includes millions of notices.

Many of the notices archived on the site are Digital Millennium Copyright Act complaints. The DMCA criminalizes the use of technical services to circumvent copyrighted material. Lumen also archives notices related to trademarks; patents; trade secrets; the EU Right to Be Forgotten; and requests from courts and law enforcement.

The database indicates the date of each notice; the sender; the recipient; a description of the content; the urls for the protected content; and the urls of the offending content.

Lumen can assist with the creation of DMCA counter notifications. After an ISP takes down alleged infringing content, a counter notification may lead to the information being made available again after 14 days.

Google voluntarily submits notices it receives to Lumen.

Stats on Wifi Encryption

wigle.net, the Wireless Geographic Logging Engine, collects data on wifi networks around the world. One of the most interesting resources on this site, is a chart tracking the use of encryption for wifi networks. The chart tracks different types of wifi encryption. The red line on the chart tracks unencrypted wifi networks; the yellow networks for which the encryption status is unknown, and the green for which there is some kind of encryption. As we can see from the chart it was only around November 2006 that the number of encrypted networks exceeded the number of encrypted networks. The WEP, Wired Equivalent Privacy, protocol continued to be more widely used than the WPA protocol until July 2012 despite the fact that the Institute of Electrical and Electronics Engineers (IEEE) stated in 2004 that this protocol no longer met its security goals. The WPA2 continues to be the most widely used encryption protocol.