Spectre's latest victim is Advanced Micro Devices Inc.'s (AMD) stock price.

After rising 20% during the first week of trading this year, AMD's stock price has taken a hit during the second week, after the company revealed a cybersecurity threat affected the company's chips. 

The company's stock fell 4% after hours Thursday after CEO Lisa Su told Yahoo finance "To clarify, for Meltdown, AMD is not susceptible. We don't have a susceptibility to that variant. But with Spectre, AMD is susceptible."

Spectre is a vulnerability discovered Jan. 3 that affects microprocessors and exposes private data to hackers. 

AMD recently released a statement saying that it is deploying a patch to fix the issue. Microsoft Inc. (MSFT) has already begun implementing the fix. 

In spite of the release of the patch, AMD insists its chip's architecture makes it difficult for attackers to exploit. 

AMD shares were down nearly 2% to $11.92 in afternoon trading Friday. 

Microsoft is a holding in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells MSFT? Learn more now.

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