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The problem highlights a lack of virus control within the manufacturing and quality control process, said Graham Cluley, senior technology consultant at Sophos Anti-Virus.
"It's odd that an old virus should creep up again," he said. "It is another example of key computer systems not having adequate antivirus protection."
Cluley pointed to previous Funlove virus infections at Microsoft and Dell that had affected the manufacturing process.
"IT managers need to effectively take charge of computers within the manufacturing and quality control process," he said.
"I would advocate placing cryptographical checksums on data passing from your company to an outsourced manufacturing company. This makes it easier to spot if data has been tampered with, and also to spot where any infection has taken place."