Many times when inspecting logs you may encounter security identifiers (SID) instead of usernames.

What if you would like to know the account behind this security identifier?

This can be easily done with few line of PowerShell.

$SID = New-Object System.Security.Principal.SecurityIdentifier("“"S-1-5-21-2553378220-2497456894-4783514835-1225")
$User = $SID.Translate([System.Security.Principal.NTAccount])
$User.Value

Simple and quick.