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There aren't many security measures to prevent the Chernobyl 73 worm from infecting your cumputer. The best way would be to install an Anti Virus software and if you do some how get the worm, do NOT open anything.
-CIH spreads under the Portable Executable file format (PE) under Windows 95, 98, and ME. CIH does not spread under Windows NT-based operating systems, such as Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, and Windows 8.1.
-The virus's initial payload works by covertly overwriting PE format files. When first installed, the virus splits itself and imbeds its parts in the spaces between the files. This enables the virus to rapidly replicate. By filling just the gaps, the virus does not increase a file's size, making it harder for anti virus software to detect it. This earned the virus the nickname "Spacefiller."
CIH, also known as Chernobyl or Spacefiller, is a Microsoft Windows 9x computer virus which first emerged in 1998. It has been one of the most damaging viruses in history by entering the infected system and overwriting critical information.
The virus was created by Chen Ing-hau who was a student at Tatung University in Taiwan. Initially 60 million computers were believed to be infected around the world causing around 1 billion US dollars in commercial damages.
-Computer worms like the Chernobyl virus destroy programs and executable files on the computers they infect. They overwhelm the computers with additional scripts, causing them to slow down. In the Chernobyl virus's case, its secondary payload also infects the Flash BIOS which prevents the computer from starting. Executable files carry a set of instructions for a program to run or install .exe
Chen claimed to have written the virus as a challenge against bold claims of antiviral efficiency by antivirus software developers
Although the virus is rather old, Symantec as well as other anti virus programs still believes the virus is in the wild and may cause damage to computer users who use outdated virus definitions, or who do not use anti virus software.
turn off and remove unneeded services
Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers
Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
Stay up to date with patches for anti virus and OS
-Over one million computers were infected in Korea after the virus was created
-This resulted in 250 million dollars in damage
-An outbreak at Boston College caused students to lose assignments and valuable data, as well as 200 computers in Singapore and 100 in Hong Kong along with many others around the world
-The virus had its first major outbreak in the summer of 1998, on pirated websites. This was possible due to the cracked operating systems available on the pirated websites
-From summer of 1998 to spring of 1999, several companies unintentionally released infected software. Origin systems released a download related to its "Wing Commander" game which was infected
-Three gaming magazines from Europe shipped an issue with infected games in them, and Yamaha released a firmware update for their CD-R400 drives
-IBM also shipped the Aptiva computer with the virus pre-installed
The chernobly73 virus hides in empty spaces between files without modifying the origional code. because of the the file size does not increase and the virus is harder to detect. Because of this the virus was nicknamed the sacefiller virus.
The chernobyl73 virus slows down and destroys PE (Portable Executable) files by overwhelming them with additional coding and in some cases can destroy the entire computer.
The name "Chernobyl virus" was coined because its first payload activation occurred on 26 April 1998, the 13th anniversary of the Chernobyl disaster.
-The Chernobyl virus is CIH. The name Chernobyl was not used at all until long after CIH was discovered. There is no evidence that the author chose April 26th because of the Chernobyl disaster.
SPACEFILLER means that it inserts itself into empty spaces in EXE files so the files don't increase in size when they are infected.
This virus was spread out very fast, this caused financial damage (roughly 1 billion dollars US globally) and damaged sales for many companies because they shipped many products with the virus pre-installed. All in all the virus was deadly for many systems and caused a large amount of financial problems
Joe