Add Sources & Methods, a CTI blog and monthly newsletter

README.md

@@ -1152,6 +1152,7 @@ Linux Security Expert</b></a> - trainings, howtos, checklists, security tools, a
 &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://www.secjuice.com"><b>Secjuice</b></a> - is the only non-profit, independent and volunteer led publication in the information security space.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://duo.com/decipher"><b>Decipher</b></a> - security news that informs and inspires.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://sourcesmethods.com/?source=tbosk"><b>Sources & Methods</b></a> - Blog and monthly digest of Cyber Threat Intelligence (CTI) information sources, tools, articles, events, and helpful tips.<br>
 </p>
 
 ##### :black_small_square: Geeky Vendor Blogs