diff --git a/sessions/opening/challenge/challenge.ps1 b/sessions/opening/challenge/challenge.ps1
index caf4e8e..08a56cc 100644
--- a/sessions/opening/challenge/challenge.ps1
+++ b/sessions/opening/challenge/challenge.ps1
@@ -1,6 +1,4 @@
 $p = 'P@ssw0rd'
-[Net.ServicePointManager]::SecurityProtocol = 'Tls12'
-$a,$b = (Get-FileHash -A 'SHA1' -I ([IO.MemoryStream]::
-new([Text.Encoding]::UTF8.GetBytes($p)))).Hash -split '(?<=^.{5})'
-(((irm "https://api.pwnedpasswords.com/range/$a" -UseB) -split
- '\r\n' -like "$b*") -split ':')[-1]
+$p|Out-File -non 'p'
+$a,$b=(filehash -a SHA1 ./p).hash-split '(?<=^.{5})'
+(((irm "https://api.pwnedpasswords.com/range/$a")-split '\r\n'-like "$b*")-split ':')[-1]