Public computers in libraries, schools, or internet cafes may have browsers restricted or removed entirely. Carrying IE8 Portable on a USB drive gives you immediate browser access without needing to install anything or request administrator permissions.
The safest method involves creating your own portable version. Use a clean Windows XP or Windows 7 virtual machine, install IE8, and capture it using a virtualization tool like VMware ThinApp or Cameyo. How to Deploy and Run IE8 Portable download internet explorer 8 portable windows 7 free
Run Windows 7 and IE8 Portable inside a secure virtual environment using software like Oracle VirtualBox or VMware Workstation. If the browser gets compromised, the damage is contained inside the virtual machine. Public computers in libraries, schools, or internet cafes