<span class="windows upgrade-windows">In the future, we</span><span class="standalone">We</span> recommend that you only plug in your TailsUSB stick while Windows is shutting down. Otherwise, a virus in Windows could infect your TailsUSB stick and break its security.
Such an attack is possible in theory but very unlikely in practice. We don't know of any virus capable of infecting Tails.<span class="standalone">See our [[warning on plugging Tails in untrusted systems|doc/about/warnings/computer#software]].</span>