updated 'Geeky Blogs'; minor fixes

- signed-off-by: trimstray <trimstray@gmail.com>

README.md

@@ -637,6 +637,8 @@ performance of any of your sites from across the globe.<br>
 <p>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://infosec.mozilla.org/guidelines/web_security.html"><b>Mozilla Web Security</b></a> - help operational teams with creating secure web applications.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://enable-cors.org/index.html"><b>Enable CORS</b></a> - enable cross-origin resource sharing.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://dfir.it/blog/2015/08/12/webshell-every-time-the-same-purpose/"><b>Webshells</b></a> - great series about malicious payloads.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://portswigger.net/blog/practical-web-cache-poisoning"><b>Practical Web Cache Poisoning</b></a> - show you how to compromise websites by using esoteric web features.<br>
 </p>
 
 ##### :black_small_square: Other
@@ -658,7 +660,6 @@ performance of any of your sites from across the globe.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://medium.com/@_bl4de/hidden-directories-and-files-as-a-source-of-sensitive-information-about-web-application-84e5c534e5ad"><b>Hidden directories and files</b></a> - as a source of sensitive information about web application.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="http://www.catb.org/esr/faqs/hacker-howto.html"><b>How To Become A Hacker</b></a> - if you want to be a hacker, keep reading.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="http://ithare.com/infographics-operation-costs-in-cpu-clock-cycles/"><b>Operation Costs in CPU</b></a> - an infographics which should help to estimate costs of certain operations in CPU clocks.<br>
-&nbsp;&nbsp;:small_orange_diamond: <a href="https://dfir.it/blog/2015/08/12/webshell-every-time-the-same-purpose/"><b>Webshells</b></a> - great series about malicious payloads.<br>
 </p>
 
 #### Inspiring Lists &nbsp;[<sup>[TOC]</sup>](#anger-table-of-contents)
@@ -722,6 +723,7 @@ performance of any of your sites from across the globe.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://linuxsecurity.expert/"><b>
 Linux Security Expert</b></a> - trainings, howtos, checklists, security tools and more.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="http://www.grymoire.com/"><b>The Grymoire</b></a> - collection of useful incantations for wizards, be you computer wizards, magicians, or whatever.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://portswigger.net/blog"><b>PortSwigger Web Security Blog</b></a> - about web app security vulns and top tips from our team of web security.<br>
 </p>
 
 ##### :black_small_square: A piece of history