.ZL9 File Extension
ZoneAlarm Quarantined EXE File
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What is a ZL9 file?
Quarantined .EXE file renamed by ZoneAlarm Antivirus, an antivirus program; contains the exact contents of an executable file, but with the extension renamed to ".zl9;" used to quarantine potentially harmful executable files discovered in email attachments.
NOTE: ZoneAlarm quarantines file types using the convention ".zlX," where "X" is a letter or number. The number 9 is the renamed value for EXE files.