Downloading professional software via P2P networks is a double-edged sword. Beyond the legal and ethical implications of bypassing licensing, these files are often "repacked." This process frequently introduces security vulnerabilities, such as malware or miners, hidden within the installation script. For a professional designer, the "free" cost of a torrent can quickly escalate into the high price of a compromised system or lost client data. Conclusion
Adobe Illustrator has always been 64-bit for modern OS compatibility. An “86-bit” label is either a typo (meant 32‑bit?) or a sign the torrent is fake/mislabeled. Adobe Illustrator CC 2018 19.0.0 -86-Bit- Utorrent