1. Overview Virus Definitions (also called DAT files or signatures) are the core database files that SEP uses to detect known malware, spyware, and other threats via pattern matching . They contain cryptographic hashes, byte sequences, and heuristic rules unique to known malicious software.
SEP distinguishes between two main types of definition updates: symantec endpoint protection virus definitions
$defVersion = Get-ItemProperty -Path "HKLM:\SOFTWARE\Symantec\Symantec Endpoint Protection\CurrentVersion\SharedDefs" -Name "VirusDefsVersion" $defDate = [DateTime]::ParseExact($defVersion.VirusDefsVersion.Split(" ")[0], "yyyy-MM-dd", $null) $age = (Get-Date) - $defDate Write-Host "Definition age: $($age.Days) days" if ($age.Days -gt 7) Write-Warning "Outdated definitions!" – Trigger LiveUpdate silently: symantec endpoint protection virus definitions