š : Avoid "serial number generators" or "keygens" found on third-party sites. These files often contain malware that can compromise your computer's security.
If you've lost your serial number, you can try contacting Adobe Support. They might be able to help you recover it. adobe illustrator cs4 serial number top
If you've purchased Adobe Illustrator CS4, you can find your serial number in several places: š : Avoid "serial number generators" or "keygens"