Operation Sindoor, a coordinated cyber campaign targeting India's critical sectors, involved state-sponsored APT activity and hacktivist operations. The attack utilized spear phishing, malicious scripts, website defacements, and data leaks. APT36, a Pakistan-aligned threat group, employed advanced tactics including the Ares RAT for persistent access. The campaign targeted defense, government IT, healthcare, telecom, and education sectors. Multiple hacktivist groups participated in DDoS attacks and defacements. The operation showcased a convergence of cyber espionage and ideological warfare, significantly impacting national cybersecurity and trust. It underscored the need for enhanced threat intelligence and robust incident response frameworks to counter evolving hybrid threats.