Microsoft's latest cross-device step is a convenience win for iPhone users, but it also pushes private messages, previews, and account trust further onto the PC.
Chinese-language phishing operations are reportedly leaning on RCS and iMessage to deliver credential theft lures inside trusted messaging apps, where SMS-era defenses are weaker.
RCS and iMessage can carry the same old scam with less carrier visibility, pushing defenders away from SMS-era controls and toward device-side and user-side detection.