Adding Hardware Security as a new sub-research area (#596)

* Create README.md

* Rename security/HW Security/README.md to security/hardware_security/README.md

* Rearranging files

* Rearranging files

* Delete sok-eternal-war-in-memory.pdf

* Moving sok-eternal-war-in-memory.pdf

* Fix dead link

Updating the link for "Internet Census via Insecure Routers"

* Add Hardware Security subsection

security/README.md

@@ -1,17 +1,23 @@
-## Security 
-
+ Security 
+===========
 * [Reflections on Trusting Trust (1984)](http://www.ece.cmu.edu/~ganger/712.fall02/papers/p761-thompson.pdf)
-* [Internet Census via Insecure Routers (2012)](https://internetcensus2012.bitbucket.io/paper.html)
+* [Internet Census via Insecure Routers (2012)](https://www.researchgate.net/publication/279069631_The_Internet_Census_2012_Dataset_An_Ethical_Examination)
 * [Looking inside the (Drop) Box (2013)](https://www.usenix.org/system/files/conference/woot13/woot13-kholia.pdf)
 * [Making Programs Forget: Enforcing Lifetime For Sensitive Data (2011)](https://www.usenix.org/events/hotos11/tech/final_files/Kannan.pdf)
 * [Breach: Reviving The Crime Attack (2013)](http://breachattack.com/resources/BREACH%20-%20SSL,%20gone%20in%2030%20seconds.pdf)
 * [Why Silent Updates Boost Security (2009)](http://www.techzoom.net/Papers/Browser_Silent_Updates_%282009%29.pdf)
 * [A survey of coordinated attacks and collaborative intrusion detection (2010)](https://www.tk.informatik.tu-darmstadt.de/fileadmin/user_upload/Group_TK/zhou2010survey.pdf)
-* [Meltdown (2018)](https://meltdownattack.com/meltdown.pdf)
-* [Spectre Attacks: Exploiting Speculative Execution (2018)](https://spectreattack.com/spectre.pdf)
 
 * :scroll: [Macaroons: Cookies with Contextual Caveats for Decentralized Authorization in the Cloud (2014)](macaroons-cookies-with-contextual-caveats.pdf)
 * :scroll: [Insertion, Evasion, and Denial of Service: eluding network intrusion detection (1998)](ids-evasion-ptacek-newsham.pdf)
+
+## Hardware Security
+
+* [Meltdown (2018)](https://meltdownattack.com/meltdown.pdf)
+* [Spectre Attacks: Exploiting Speculative Execution (2018)](https://spectreattack.com/spectre.pdf)
+* [DRAM Row Hammer (2014)](https://people.inf.ethz.ch/omutlu/pub/dram-row-hammer_isca14.pdf)
+   - Flipping Bits in Memory Without Accessing Them: An Experimental Study of DRAM Disturbance Errors
+
 * :scroll: [SoK: Eternal War in Memory (2013)](sok-eternal-war-in-memory.pdf)
    - Classifies memory attacks into a taxonomy that is usable by both black- and white-hats.
    - An excellent primer on the different memory-related vulnerabilities that exist, (more importantly) why they exist, and the ways in which various defences act to counter them.