.ZL9 File Extension

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.