Hackers Use ‘rn’ Typo Trick to Impersonate Microsoft and Marriott in New Phishing Attack

**Executive Summary:** A homoglyph (typosquatting) phishing campaign is impersonating Marriott and Microsoft by registering domains that replace the letter "m" with "rn" (e.g., `rnarriottinternational.com`, `rnicrosoft.com`) to trick users—especially on mobile—into divulging credentials or personal data; the report lists multiple malicious domains flagged by security firms and recommends blocking those IOCs, verifying sender addresses, hovering over links, manually navigating to official sites, and using password managers.