Sign-ins from IPs that attempt sign-ins to disabled accounts (Uses Authentication Normalization)

Original query, unchanged.

imAuthentication
| where EventResult =='Failure'
| where EventResultDetails == 'User disabled'
| summarize StartTime=min(EventStartTime), EndTime=max(EventEndTime), disabledAccountLoginAttempts = count()
      , disabledAccountsTargeted = dcount(TargetUsername), disabledAccountSet = make_set(TargetUsername)
      , applicationsTargeted = dcount(TargetAppName)
      , applicationSet = make_set(TargetAppName) 
      by SrcDvcIpAddr, Type
| order by disabledAccountLoginAttempts desc
| join kind=leftouter 
    (
    // Consider these IPs suspicious - and alert any related  successful sign-ins
    imAuthentication
    | where EventResult=='Success'
    | summarize successfulAccountSigninCount = dcount(TargetUsername), successfulAccountSigninSet = makeset(TargetUsername, 15) by SrcDvcIpAddr, Type
    // Assume IPs associated with sign-ins from 100+ distinct user accounts are safe
    | where successfulAccountSigninCount < 100
    )
    on SrcDvcIpAddr
| where isnotempty(successfulAccountSigninCount)
| project StartTime, EndTime, SrcDvcIpAddr, disabledAccountLoginAttempts, disabledAccountsTargeted, disabledAccountSet, applicationSet, 
successfulAccountSigninCount, successfulAccountSigninSet, Type
| order by disabledAccountLoginAttempts