A patch Microsoft released on Wednesday to fix a zero-day vulnerability in its Defender security engine may cause Windows machines to write files large enough to completely consume available disk space, the researcher who discovered the flaw said. RoguePlanet, tracked as CVE-2026-50656, came to public notice in June when …

Amnesty International on Friday said it determined that a zero-day exploit sold by controversial exploit vendor Cellebrite was used to compromise the phone of a Serbian student who had been critical of that country's government. The human rights organization first called out Serbian authorities in December for what it …