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They don't. Recommended reading: DMCA safe harbor provision https://en.wikipedia.org/wiki/Digital_Millennium_Copyright_Act#Title_II:_Online_Copyright_Infringeme
by Piskvorrr 12y ago
They don't. Recommended reading: DMCA safe harbor provision https://en.wikipedia.org/wiki/Digital_Millennium_Copyright_Act#Title_II:_Online_Copyright_Infringement_Liability_Limitation_Act https://en.wikipedia.org/wiki/Digital_Millennium_Copyright_A... and related. In other words, things get taken down by nastygrams from lawyers, not by algorithm.
Note that images may be "illegal" for approximately ten bazillion different reasons, and most of those reasons can't be determined algorithmically - from copyright infringement to pornography (famously defined as "I know it when I see it").