diff --git a/.gitmodules b/.gitmodules
index 4b05d87..afa80d5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "Publications/AG-CG-MPI-Tasking_Paper"]
 	path = Publications/AG-CG-MPI-Tasking_Paper
 	url = https://git.theschricks.com/noah/AG-CG-MPI-Tasking_Paper
+[submodule "Publications/Cybersec-and-HPC-Textbook-Chapter"]
+	path = Publications/Cybersec-and-HPC-Textbook-Chapter
+	url = https://git.theschricks.com/noah/Cybersec-and-HPC-Textbook-Chapter
diff --git a/Publications/Cybersec-and-HPC-Textbook-Chapter b/Publications/Cybersec-and-HPC-Textbook-Chapter
new file mode 160000
index 0000000..0c37aeb
--- /dev/null
+++ b/Publications/Cybersec-and-HPC-Textbook-Chapter
@@ -0,0 +1 @@
+Subproject commit 0c37aeb82429ed6441a6ac0b13e637f1151de744