(Bloomberg) -- FireEye Inc., Symantec Corp. and other cybersecurity stocks jumped Monday as a global computer hacking attack entered its third day, suggesting higher corporate and government spending on their technology will follow.

A wave of threats demanding a ransom of $300 to unlock the computer or risk losing data hit more than 200,000 computers in at least 150 countries from the U.S. to Europe to Asia. The malware used a technique purportedly stolen from the U.S. National Security Agency. The victims were given 72 hours to pay the ransom in bitcoin.

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