Kashmir has been a flashpoint between India and Pakistan since independence.
Both countries claim all of Muslim-majority Kashmir but control only parts of it. They have fought two wars and a limited conflict in the region.
Thursday's attack was the deadliest attack against Indian forces since an Islamist-led insurgency began in 1989. It sparked anti-Pakistan protests in some Indian cities and angry mobs targeted Kashmiri students and businessmen.
Mobile internet services in Indian-administered Kashmir were cut over the weekend and the Indian government has pulled security normally provided to at least five Kashmiri separatist leaders.
Isolated incidents of students from Kashmir being beaten up or evicted from their accommodation in northern Indian states have also been reported.
India's Central Reserve Police Force (CRPF) offered help to students in need, but also warned of false reports.
In broader terms, there has has been a spike in violence in Indian-administered Kashmir since Indian forces killed a popular militant in 2016. Significant numbers of young men have joined the insurgency in recent years and the funerals of well-known militants draw huge crowds who want to pay respects to "martyrs".
India has been accused of using excessive force to control protests with thousands of people suffering eye injuries or being blinded by pellet guns.