doc: Mention secure wipe after deleting Tails.

3b9957ef · Tails developers · c54391bd · 3b9957ef
Commit 3b9957ef authored Apr 03, 2012 by Tails developers
--- a/wiki/src/doc/first_steps/resetting_a_usb_stick.intro.mdwn
+++ b/wiki/src/doc/first_steps/resetting_a_usb_stick.intro.mdwn
@@ -3,4 +3,6 @@ reset it.

 **The content of the USB stick will be lost in the operation,** but an attacker
 might still be able to tell that Tails was installed on the USB stick using
-[[data recovery techniques|encryption_and_privacy/secure_deletion]].
+[[data recovery techniques|encryption_and_privacy/secure_deletion]] unless you
+[[securely clean all the available disk space|encryption_and_privacy/secure_deletion#index4h1]]
+afterwards.