Access Now relied on technical assessments as well as news articles and personal accounts to compile its report, which spans complete blackouts, suspensions of specific phone networks or social media apps, and the slowing down of internet speeds.

Source: https://tech.slashdot.org/story/23/02/28/134238/governments-shut-down-the-internet-more-often-than-ever-report-says?utm_source=rss1.0mainlinkanon&utm_medium=feed

Reuters reported that according to digital rights group Access Now, the shutdowns in 2021 cost the economy an estimated $600 million.

Source: http://southasiajournal.net/is-india-isolating-kashmir-from-the-real-world-the-case-of-digital-deprivation/