You generally cannot know because we don't measure for it? Especially not on personal computers, maybe ECC ram reports this information in some way? In practic

You generally cannot know because we don't measure for it? Especially not on personal computers, maybe ECC ram reports this information in some way? In practice I think it happens often enough, and I remember a blackhat conference talk from around a decade ago where the hacker squatted typoed variants of the domain of a popular facebook game, and caught requests from real end users. Basing his attack on the random chance of bitflips during dns lookups. Related, but not the video I was referring to https://news.ycombinator.com/item?id=5446854 https://news.ycombinator.com/item?id=5446854