Hacker and Alien.

Summary

Yang Hai Chen, unaware of the computer issues, was asked by Professor Zhang Ji Min about a strange incident. After Zhang explained, Yang realized he needed to investigate. He speculated that the problem might relate to "K antivirus software" vulnerabilities. Zhang described a method on Oss to reset vulnerabilities, which failed this time. The mystery deepened when they discovered He Ya Ping's "K antivirus software" showed no vulnerabilities, unlike Zhang and Song Ping's versions. They puzzled over why two identical software versions produced different results, eventually realizing that He Ya Ping had a different, unupgraded version of the software.

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