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Web attacks build on Shellshock bug

A series of attacks on websites and servers using the serious Shellshock bug has been spotted.

Millions of servers use software vulnerable to the bug, which lets attackers run commands on that system.

So far, thousands of servers have been compromised via Shellshock and some have been used to bombard web firms with data, said experts.

Liam O'Murchu from Symantec Corp said it is very serious.

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