It's not concerning. The flaw was 1) only about hidden services, 2) was patched the next day it was released 3) The Tor Project have been doing some extraordina

It's not concerning. The flaw was 1) only about hidden services, 2) was patched the next day it was released 3) The Tor Project have been doing some extraordinary work on creating a stronger and secure onion service infrastructure which will be deployed by hopefully mid-2017.