Expired access credentials being used in Azure

Requête originale, sans modification.

// Timeframe to search for failed logins.
let timeframe=1d;
// Timeframe to look back for successful logins from the same user by IP.
let lookback=7d;
let SuspiciousSignings=(
    SigninLogs
    | where TimeGenerated >= ago(timeframe)
    | where ResourceDisplayName contains "Windows Azure Active Directory"
    // 50132 = SsoArtifactInvalidOrExpired - The session is not valid due to password expiration or recent password change.
    // 50173 = FreshTokenNeeded - The provided grant has expired due to it being revoked, and a fresh auth token is needed. 
    // 70008 = ExpiredOrRevokedGrant - The refresh token has expired due to inactivity. The token was issued on XXX and was inactive for a certain period of time.
    // 81010 = DesktopSsoAuthTokenInvalid - Seamless SSO failed because the user's Kerberos ticket has expired or is invalid.
    | where ResultType in (50173, 50132, 70008, 81010)
    | summarize FailedCountPerDay=count(),FailedUserAgents=make_set(UserAgent), FailedCountries=make_set(LocationDetails.countryOrRegion),FailedIps=make_set(IPAddress) by UserPrincipalName, Day=bin(TimeGenerated, 1d)
    | where FailedCountPerDay >= 1
);
let SuccessLogins=(
    SigninLogs
    | where TimeGenerated >= ago(lookback)
    | where UserPrincipalName in ((SuspiciousSignings | project UserPrincipalName))
    | where ResultType == 0
    | summarize count() by UserPrincipalName, IPAddress
);
SuspiciousSignings
| mv-expand FailedIp=FailedIps
| extend FailedIp=tostring(FailedIp)
| join kind=leftanti SuccessLogins on $left.FailedIp==$right.IPAddress, UserPrincipalName