Update 'README.md'

README.md

@@ -14,12 +14,13 @@ ___
 #### Reading Stack
 - [Marx, Engels and the Abolition of the Family](https://www.csustan.edu/sites/default/files/History/Faculty/Weikart/Marx-Engels-and-the-Abolition-of-the-Family.pdf) *(added 5/3/2023)*
 - [Cryptography](https://en.wikipedia.org/wiki/Cryptography) *(added 5/3/2023)*
-- [Tails (operating system)](https://en.wikipedia.org/wiki/Tails_(operating_system)) *(added 5/3/2023)*
 - [Largest Known Primes - a Summary](https://t5k.org/largest.html) *(added 5/3/2023)*
 - [Unauthorized Bread](https://arstechnica.com/gaming/2020/01/unauthorized-bread-a-near-future-tale-of-refugees-and-sinister-iot-appliances/) - Cory Doctorow *(added 5/3/2023)*
-- [Managing OpenPGP Keys](https://riseup.net/en/security/message-security/openpgp/gpg-keys)*(added 5/3/2023)*
+- [Managing OpenPGP Keys](https://riseup.net/en/security/message-security/openpgp/gpg-keys) *(added 5/3/2023)*
 - [PGP - Pretty Good Privacy](https://en.wikipedia.org/wiki/Pretty_Good_Privacy) *(added 5/3/2023)*
 - [GPG - GNU Privacy Guard](https://en.wikipedia.org/wiki/GNU_Privacy_Guard) *(added 5/3/2023)*
+- [Defense Intelligence Headquarters - 情報本部](https://en.wikipedia.org/wiki/Defense_Intelligence_Headquarters) *(added 5/4/2023)*
+- [XKeyscore](https://en.wikipedia.org/wiki/XKeyscore) *(added 5/4/2023)*
 
 ## [Mathematics and Computer Science](mathematics.md)
 - [OEIS: The Online Encyclopedia of Integer Sequences](https://oeis.org/)
@@ -33,6 +34,7 @@ ___
     - [Prism](https://en.wikipedia.org/wiki/PRISM)
     - [Boundless Informant](https://en.wikipedia.org/wiki/Boundless_Informant)
 - [Onion Routing](https://en.wikipedia.org/wiki/Onion_routing)
+    - [Tails (operating system)](https://en.wikipedia.org/wiki/Tails_(operating_system))
 - [The CIA and the media](https://web.archive.org/web/20131025035711/http://www.carlbernstein.com/magazine_cia_and_media.php) - Carl Bernstein
 
 ## Influential Essays and Articles