: Downloading software from unofficial "Mega" links carries high risks of malware, trojans, or ransomware. Adobe recommends using only official trial links if they are still available through their legacy support pages. Activation

Even if you manage to find a clean, malware-free portable version of InDesign CS4, the software will struggle to perform adequately in a modern production environment.

and other security forums warn that downloading executables from these platforms can lead to system-wide infections. No Activation Support: