diff --git a/Gemfile b/Gemfile
index dd465bb..6a9a35e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,6 +14,7 @@ gem 'jbuilder'
 gem 'activeresource', github: 'rails/activeresource', require: 'active_resource'
 
 gem 'pry-rails'
+gem "rack-attack", "~> 6.7"
 
 # gem 'spreadsheet_architect'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index bab908e..24edf39 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -144,6 +144,8 @@ GEM
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.4)
+    rack-attack (6.7.0)
+      rack (>= 1.0, < 4)
     rack-test (2.0.2)
       rack (>= 1.3)
     rails (6.0.5.1)
@@ -226,6 +228,7 @@ DEPENDENCIES
   pg
   pry-rails
   puma (< 5)
+  rack-attack (~> 6.7)
   rails (~> 6.0.4)
   sass-rails
   spring
diff --git a/config/initializers/rack_attack.rb b/config/initializers/rack_attack.rb
new file mode 100644
index 0000000..553e327
--- /dev/null
+++ b/config/initializers/rack_attack.rb
@@ -0,0 +1,5 @@
+require "net/http"
+
+Net::HTTP.get(URI("https://lists.fissionrelays.net/tor/exits.txt")).split("\n").each do |tor_exit|
+  Rack::Attack.blocklist_ip(tor_exit)
+end