Ozone Depleting Chemicals CFCs The destruction of ozone is accelerated by certain trace gases containing nitrogen, hydrogen, bromine, and chlorine. These are referred to as ozone depletion chemicals.
YAC (which stands for Yet Another Cleaner) is a company developing not only registry cleaners but all sorts of system utilities and security tools. And one of their best creations is the YAC Virus Removal Tool (which removes viruses, that must be clear).
Once memory resident, the Tremor virus infects .EXE files as they are executed. Additional Comments: The Tremor virus was received in March, 1993, and is from Germany. Tremor is a memory resident infector of COMMAND.COM and .EXE files. It is an anti anti-virus virus, containing some checks to avoid detection by anti-viral software. When the first Tremor infected program is executed, the Tremor virus will install itself memory resident at the top of system memory but below the 640K DOS boundary, hooking interrupts 15 and 21.