An Adalytics report shows how ad systems run by Google, Amazon, Microsoft and others inadvertently placed ads on a website that hosts CSAM (Thomas Germain/BBC)

Thomas Germain / BBC:
An Adalytics report shows how ad systems run by Google, Amazon, Microsoft and others inadvertently placed ads on a website that hosts CSAM  —  Some of the biggest tech companies in the world served ads on a website featuring images of child abuse, helping to fund its operations.