Reaper macOS Malware and Two Microsoft Defender Zero-Days Exploited in the Wild

SentinelOne’s Week 21 roundup flags two Microsoft Defender zero-days currently exploited in the wild, and Reaper, a new macOS infostealer that spoofs multiple well-known software brands (including Adobe and Notion) to trick users into installing malicious payloads. Details on the Defender zero-days are limited in this summary; organizations should monitor forthcoming CISA KEV additions and apply Defender updates as they ship. Mac users should verify software authenticity and avoid installations from non-App Store or unverified sources.