add stuff to common pitfalls

diff --git a/TODO.txt b/TODO.txt
index 0b75c64..3841f05 100644 (file)
--- a/TODO.txt
+++ b/TODO.txt
@@ -39,6 +39,7 @@ Contents
   - key generation
   - key management , key life cycle
   - cloning of VMs
+  - common / default passphrases
 * DH parameter?
 * Further research
  - mysql, SMB,