The fake system error alert that says “explorer.exe – Corrupt Disk” is a scary popup associated with a new malware called System Repair. This is a fake hard drive defragmentation and system optimization utility that is being spread through various malicious and infected links and sites all over the world. The infiltration of this scam takes place due to various leaks in system security protection and other available vulnerabilities of your computer. Regretfully, many systems have been already attacked by this hoax.