Most of those testing the Arma 3 Alpha multiplayer will have noticed a widespread abuse of its script functionality over the past few days. This particular type of exploit has been made harder in today’s Development branch version (more info – certainly not the end of improvements in this area). We are considering deploying to default branch next week, pending test results. Persistent server admins are urged to restart Development servers.
The general topic of cheating will be addressed in a little more detail in the next SITREP. It is important to say already that we have reasons for not yet applying the global anti-cheat measures. We intend to do it as soon as we are able to.
Note: installscript.vdf in the Steam game installation is not malicious, but part of the Steam installation process. On first-time setup it installs DirectX runtimes and sets up the registry. We do not currently have indications this file was compromised by this abuse. If you have other specific information, please contact us directly at firstname.lastname@example.org.
Thank you for your enduring patience and support, and for remembering this still is a development Alpha product. Together we can make the main game a more secure experience.