diff --git a/Notes/Semester 4/ITS - IT-Sicherheit/Week 1/SecLab1_PasswordCracking.rnote b/Notes/Semester 4/ITS - IT-Sicherheit/Week 1/SecLab1_PasswordCracking.rnote
index 4ffde67..634fb7b 100644
Binary files a/Notes/Semester 4/ITS - IT-Sicherheit/Week 1/SecLab1_PasswordCracking.rnote and b/Notes/Semester 4/ITS - IT-Sicherheit/Week 1/SecLab1_PasswordCracking.rnote differ
diff --git a/Notes/Semester 4/ITS - IT-Sicherheit/Week 2/SecLab2_WorkFactor.pdf b/Notes/Semester 4/ITS - IT-Sicherheit/Week 2/SecLab2_WorkFactor.pdf
new file mode 100644
index 0000000..ecb9164
Binary files /dev/null and b/Notes/Semester 4/ITS - IT-Sicherheit/Week 2/SecLab2_WorkFactor.pdf differ
diff --git a/Notes/Semester 4/ITS - IT-Sicherheit/Week 2/SecLab2_WorkFactor.rnote b/Notes/Semester 4/ITS - IT-Sicherheit/Week 2/SecLab2_WorkFactor.rnote
new file mode 100644
index 0000000..b482231
Binary files /dev/null and b/Notes/Semester 4/ITS - IT-Sicherheit/Week 2/SecLab2_WorkFactor.rnote differ
diff --git a/Notes/Semester 4/ITS - IT-Sicherheit/x-IntroCrypto.md b/Notes/Semester 4/ITS - IT-Sicherheit/x-IntroCrypto.md
new file mode 100644
index 0000000..5365f56
--- /dev/null
+++ b/Notes/Semester 4/ITS - IT-Sicherheit/x-IntroCrypto.md	
@@ -0,0 +1 @@
+Information-theoretically secure
\ No newline at end of file