The ones collected in my rss reader after years, as hackers in the general sense, not just security:

http://blawg.72dpiarmy.com/

http://arduino.cc/blog/

http://blog.makezine.com/archive/arduino/

http://events.ccc.de/

http://chaosradio.ccc.de/chaos_tv.html

http://chaosradio.ccc.de/chaosradio_international.html

http://charlie137-2.blogspot.com/

http://www.flylogic.net/blog/

http://gilesbowkett.blogspot.com/

http://ha.ckers.org/blog/

http://har2009.org/

http://neil.fraser.name/

http://www.nycresistor.com/

http://schulzeandwebb.com/blog/

http://www.hackerfactor.com/blog/

http://thepiratesdilemma.com/

http://the-shoebox.org/

Good luck, looking to see your memetracker ;)