http://internet.watch.impress.co.jp/docs/news/20110413_439348.html

http://gigazine.net/news/20110413_firefox_5/

http://japanese.engadget.com/2011/04/12/internet-explorer-10/

http://itpro.nikkeibp.co.jp/article/NEWS/20110413/359360/

http://www.atmarkit.co.jp/fnetwork/rensai/dnssec02/01.html

http://blogs.technet.com/b/jpsecurity/archive/2011/04/13/3421045.aspx

http://blogs.technet.com/b/jpsecurity/archive/2011/04/13/3421074.aspx

http://www.itmedia.co.jp/news/articles/1104/13/news015.html

https://www.jpcert.or.jp/at/2011/at110008.txt

https://www.jpcert.or.jp/wr/2011/wr111401.html