diff --git a/760.myco b/760.myco
deleted file mode 100644
index f100fd1..0000000
--- a/760.myco
+++ /dev/null
@@ -1,4 +0,0 @@
-= 760
-http://wiki.xxiivv.com/site/nebu.html
-
-Spreadsheet for uxn. Minimal but might be usable.
\ No newline at end of file
diff --git a/761.myco b/761.myco
deleted file mode 100644
index 9b5ce6e..0000000
--- a/761.myco
+++ /dev/null
@@ -1,4 +0,0 @@
-= 761
-https://www.landley.net/history/mirror/apple2/implementingvisicalc.html
-
-> 
\ No newline at end of file
diff --git a/825.myco b/825.myco
new file mode 100644
index 0000000..c102315
--- /dev/null
+++ b/825.myco
@@ -0,0 +1,4 @@
+= 825
+https://kidneybone.com/c2/wiki/TheKenThompsonHack
+
+> Ken describes how he injected a virus into a compiler. Not only did his compiler know it was compiling the login function and inject a backdoor, but it also knew when it was compiling itself and injected the backdoor generator into the compiler it was creating.  The source code for the compiler thereafter contains no evidence of either virus.
\ No newline at end of file
diff --git a/Implementing VisiCalc.myco b/Implementing VisiCalc.myco
deleted file mode 100644
index 6e7f768..0000000
--- a/Implementing VisiCalc.myco	
+++ /dev/null
@@ -1,4 +0,0 @@
-= Implementing VisiCalc
-https://www.landley.net/history/mirror/apple2/implementingvisicalc.html
-
-> 
\ No newline at end of file
diff --git a/The Ken Thompson Hack.myco b/The Ken Thompson Hack.myco
new file mode 100644
index 0000000..53983db
--- /dev/null
+++ b/The Ken Thompson Hack.myco	
@@ -0,0 +1,4 @@
+= The Ken Thompson Hack
+https://kidneybone.com/c2/wiki/TheKenThompsonHack
+
+> Ken describes how he injected a virus into a compiler. Not only did his compiler know it was compiling the login function and inject a backdoor, but it also knew when it was compiling itself and injected the backdoor generator into the compiler it was creating.  The source code for the compiler thereafter contains no evidence of either virus.
\ No newline at end of file
diff --git a/XXIIVV — nebu.myco b/XXIIVV — nebu.myco
deleted file mode 100644
index f81696f..0000000
--- a/XXIIVV — nebu.myco	
+++ /dev/null
@@ -1,4 +0,0 @@
-= XXIIVV — nebu
-http://wiki.xxiivv.com/site/nebu.html
-
-Spreadsheet for uxn. Minimal but might be usable.
\ No newline at end of file