diff --git a/modules/2-owasp.livemd b/modules/2-owasp.livemd
index c60e52b..7da686d 100644
--- a/modules/2-owasp.livemd
+++ b/modules/2-owasp.livemd
@@ -123,7 +123,7 @@ end
 # DO NOT CHANGE CODE ABOVE THIS LINE =========================
 
 # PasswordCompare.option_one("users_password", md5_hash)
-# PasswordCompare.option_two("users_password", bcrypt_salted_hash)
+ PasswordCompare.option_two("users_password", bcrypt_salted_hash)
 ```
 
 <!-- livebook:{"branch_parent_index":3} -->
@@ -252,7 +252,7 @@ _HINT: Installed dependencies can be found at the very top, it was the very firs
 
 ```elixir
 # CHANGE ME
-vulnerable_dependency = :vulnerable_dependency
+vulnerable_dependency = :plu
 
 # DO NOT CHANGE CODE BELOW THIS LINE ============================
 Application.spec(vulnerable_dependency)[:vsn] |> List.to_string() |> IO.puts()
diff --git a/modules/3-ssdlc.livemd b/modules/3-ssdlc.livemd
index 6afce3a..08ab02d 100644
--- a/modules/3-ssdlc.livemd
+++ b/modules/3-ssdlc.livemd
@@ -46,8 +46,8 @@ A very easy way to prevent secrets being added to go though is to access them vi
 _Use `System.get_env/1` on line 2._
 
 ```elixir
-# let's assume there is an environment variable named 'envar_secret'
-super_secret_password = "p@ssw0rd"
+# Let's assume there is an environment variable named 'envar_secret'
+super_secret_password = System.get_env("envar_secret")
 
 # DO NOT CHANGE CODE BELOW THIS COMMENT
 IO.puts(super_secret_password)
diff --git a/modules/4-graphql.livemd b/modules/4-graphql.livemd
index 24d9a3f..28845ce 100644
--- a/modules/4-graphql.livemd
+++ b/modules/4-graphql.livemd
@@ -64,7 +64,7 @@ _Uncomment the line with your answer._
 ```elixir
 # answer = :API6_2019_Mass_Assignment
 # answer = :API10_2019_Insufficient_Logging_Monitoring
-# answer = :API3_2019_Excessive_Data_Exposure
+answer = :API3_2019_Excessive_Data_Exposure
 # answer = :API4_2019_Lack_of_Resources_Rate_Limiting
 
 IO.puts(answer)
@@ -92,7 +92,7 @@ _Uncomment the item number (1-4) with your answer_
 
 ```elixir
 # -------------------------------------------------------------
-# answer = 1
+answer = 1
 #
 # HTTP/2 401 Unauthorized
 # Date: Tues, 16 Aug 2022 21:06:42 GMT
diff --git a/modules/5-elixir.livemd b/modules/5-elixir.livemd
index 73c1dc2..0a19b71 100644
--- a/modules/5-elixir.livemd
+++ b/modules/5-elixir.livemd
@@ -60,7 +60,7 @@ prev_count = :erlang.system_info(:atom_count)
 try do
   malicious_user_input
   # ONLY CHANGE LINE 8
-  |> String.to_atom()
+  |> String.to_existing_atom()
 rescue
   e -> {ArgumentError, e}
 end
@@ -176,7 +176,7 @@ Benchee.run(%{
   "Constant" => fn -> Constant.compare(user_input, password) end
 }, time: 3, warmup: 2)
 
-# IO.puts(:comparison_ran)
+IO.puts(:comparison_ran)
 ```
 
 ## Boolean Coercion
@@ -225,7 +225,7 @@ user_input = "some_string_which_obviously_isnt_the_same_as_the_password"
 :ok
 # DO NOT EDIT ANY CODE ABOVE THIS LINE =====================
 
-# if SecurityCheck.validate(user_input, password) or raise(SecurityCheck) do :you_let_a_baddie_in end
+if SecurityCheck.validate(user_input, password) or raise(SecurityCheck) do :you_let_a_baddie_in end
 # if SecurityCheck.validate(user_input, password) || raise(SecurityCheck) do :you_let_a_baddie_in end
 ```
 
@@ -284,7 +284,7 @@ This prevents the table from being read by other processes, such as remote shell
 
 ```elixir
 # ONLY EDIT THIS LINE
-secret_table = :ets.new(:secret_table, [:public])
+secret_table = :ets.new(:secret_table, [])
 :ets.info(secret_table)[:protection]
 ```
 
diff --git a/modules/6-cookies.livemd b/modules/6-cookies.livemd
index c261b9a..e31ba52 100644
--- a/modules/6-cookies.livemd
+++ b/modules/6-cookies.livemd
@@ -185,7 +185,7 @@ cookie_name = "CHANGE_ME_TOO"
 conn
 |> Plug.Conn.put_resp_cookie(
   cookie_name,
-  <<42::16>>
+  "PerfectCookieValue"
   # domain: ,
   # path: ,
   # secure: ,
diff --git a/modules/7-anti-patterns.livemd b/modules/7-anti-patterns.livemd
index 7de1d62..4f0c10d 100644
--- a/modules/7-anti-patterns.livemd
+++ b/modules/7-anti-patterns.livemd
@@ -78,7 +78,7 @@ _Uncomment the line with your answer._
 ```elixir
 # answer = :bubble_sort
 # answer = :merge_sort
-# answer = :quick_sort
+ answer = :quick_sort
 # answer = :random_sort
 
 IO.puts(answer)