According to an investigative report in Guardian, Yahoo search engine and Yahoo-owned Flickr photo-sharing site altered their sites earlier this month to prevent users in India from switching off the safe-search facility.
Microsoft's Bing search engine also bans Indian users from searching for sexual content.
Users who do try to search for sexual material receive a notice informing them that "your country or region requires a strict Bing SafeSearch setting, which filters out results that might return adult content," says the report published on Dec 28.
The deeply religious country full of traditionalists reportedly accounts for more searches on 'sex' than any other country.
The report also goes on to point out that India, the land of Kama Sutra and wet saris of Bollywood, has seen several controversies in the recent past such as the former Andhra Pradesh governor ND Tiwari's sex scandal and the banning of cartoon porn site Savithabhabhi.com.