Tuesday, April 27, 1999 Published at 18:27 GMT 19:27 UK
Chernobyl virus causes Asian meltdown
Like its namesake, the Chernobyl virus has caused global alarm
By Internet Correspondent Chris Nuttall
Hundreds of thousands of computers in Asia and the Middle East have had their data wiped by a malicious program known as the Chernobyl virus.
It was timed to strike on Monday, the 13th anniversary of the nuclear reactor disaster, and computer network managers in the regions have since been counting the cost.
While Chernobyl, a variant of the CIH virus, had a damaging impact in some parts of the world, the US and Europe seem to have largely escaped its effects.
Chernobyl around since June
CIH was discovered as long ago as last June in Taiwan. But despite warnings about its deadly effects on Windows 95 or 98 machines from anti-virus software companies since then, it still appears to have wreaked havoc in certain countries.
In the West, companies had protected their computers with anti-virus programs that killed it, but in Asia and the Middle East the same precautions had been ignored in many cases.
Chernobyl also spreads through pirated software, which is rife in these parts of the world. The virus can delete most of the data stored on computers and can even wipe out the BIOS - the basic instructions that tell the computer to start.
Asian countries worst-hit
Countries in Asia appear to have been affected the worst by the virus:
Middle East suffers 'catastrophe'
Middle East and Gulf countries were also badly hit:
Chernobyl has not been propagated to the same extent as the recent Melissa virus, which jammed networks with e-mail, but it has caused far greater damage.