Hackers Hijack YouTube and Fake Wallpaper App To Unleash notnullOSX Malware Onslaught

notnullOSX is a modular Go-based macOS infostealer distributed through a polished fake "WallSpace" wallpaper site, a malicious DMG, and a hijacked YouTube channel; attackers use social engineering to coerce Full Disk Access and selectively target crypto holders (≥$10,000), harvesting browser credentials, cookies, messaging data, SSH keys, and crypto wallet files and using persistence and C2 for exfiltration (early detections in Vietnam, Taiwan, and Spain).