“How this proliferation occurred is unclear, but suggests an active market for ‘second hand’ zero-day exploits,” Google's report reads, using the term zero-day to refer to secret hacking techniques that exploit unpatched vulnerabilities. “Beyond these identified exploits, multiple threat actors have now acquired advanced exploitation techniques that can be reused and modified with newly identified vulnerabilities.”
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这里面不仅有林木本身的价值，还有绿肺效应，更能带来旅游、林下经济等。“绿水青山就是金山银山”，这实际上是增值的。