Netskope - Heavy Personal Cloud Storage Usage (Shadow IT)

Requête originale, sans modification.

let heavyUsageThresholdMB = 500;
NetskopeWebTransactions_CL
| where TimeGenerated > ago(1h)
| where isnotempty(CsUsername) and isnotempty(XCsApp)
| where XCsApp has_any ('Dropbox', 'Google Drive', 'OneDrive', 'Box', 'iCloud', 'pCloud', 'MEGA', 'MediaFire', 'WeTransfer')
| where XCsAppInstanceTag contains 'Personal' 
    or XCsAppInstanceName contains 'Personal'
    or XCsAppTags contains 'Unsanctioned'
    or not(XCsAppTags contains 'Enterprise')
| summarize 
    TotalBytes = sum(Bytes),
    UploadBytes = sum(CsBytes),
    DownloadBytes = sum(ScBytes),
    FileCount = dcount(XCsAppObjectName),
    Files = make_set(XCsAppObjectName, 10),
    Activities = make_set(XCsAppActivity),
    EventCount = count()
    by CsUsername, XCsApp, XCsAppCategory, XCsAppInstanceName, XCsAppTags, XCDevice, XCCountry
| extend 
    TotalMB = round(TotalBytes / 1048576.0, 2),
    UploadMB = round(UploadBytes / 1048576.0, 2),
    DownloadMB = round(DownloadBytes / 1048576.0, 2)
| where TotalMB > heavyUsageThresholdMB or FileCount > 50
| project 
    TimeGenerated = now(),
    User = CsUsername,
    CloudApplication = XCsApp,
    AppCategory = XCsAppCategory,
    AppInstance = XCsAppInstanceName,
    AppTags = XCsAppTags,
    TotalDataMB = TotalMB,
    UploadMB,
    DownloadMB,
    FileCount,
    Files,
    Activities,
    Device = XCDevice,
    Country = XCCountry,
    EventCount