update

README.md

@@ -97,9 +97,10 @@ on pypi as it is a dependency. Just download and install it from
 https://git.plastiras.org/emdee/toxygen_wrapper
 
 This is being ported to Qt6 using qtpy https://github.com/spyder-ide/qtpy
-It now runs on PyQt5 and should run on PyQt6, and may run on PySide2 and
+It now runs on PyQt5 and PyQt6, and may run on PySide2 and
 PySide6 - YMMV. You will be able to choose between them by setting the
 environment variable QT_API to one of: pyqt5 pyqt6 pyside2 pyside6.
+It's currently tested only on PyQt5.
 
 To install it,  look in the Makefile for the install target and type
 ```
@@ -114,8 +115,16 @@ You should set the PIP_EXE_MSYS and PYTHON_EXE_MSYS variables and it does
 ```
 and installs into PREFIX which is usually /usr/local
 
+## Updates
+
 Up-to-date code is on https://git.plastiras.org/emdee/toxygen
 
+Although Tox works over Tor, we do not recommend its usage for
+anonymity as it leaks DNS requests due to a 6-year old known security
+issue: https://github.com/TokTok/c-toxcore/issues/469 Do not use it for
+anonymous communication unless you have a TCP and UDP firewall in place.
+
+
 ## MultiDevice
 
 Work on this project is suspended until the