You find a version that genuinely works. It launches, you can draw shapes, and you can save files. However, you are still at risk:
You get a program that opens, but within 10 minutes you realize it’s unusable. Adobe Illustrator Cs6 Portable Highly Compressed Free
Adobe Illustrator CS6 remains one of the most iconic versions of Adobe’s vector graphics editor. Even years after its release, many users prefer CS6 over newer Creative Cloud versions due to its classic interface, stability, and the absence of recurring subscription fees. Security risks
A "Portable" version refers to a modified, pre-activated copy of the software that does not require installation. When combined with "highly compressed" files, it becomes a quick download for users looking to save disk space and time. However, while this sounds convenient, there are critical factors to consider before downloading. Stability and functionality
Legitimate Adobe software receives security updates. A cracked portable CS6 will never be updated. If a vulnerability is discovered (and many have been since 2012), your system remains exposed forever.