I wrote an answer on Southeast Asian piracy here:
But as far as I know, by the 1870s piracy was very much diminished in the region. This was due to a combination of factors, such as the traditional sponsors of piracy finding greater wealth in plantations instead of maritime activities, and the European colonial powers having access to steamships which they could use to eradicate piracy. It may have continued to be present in other parts of Asia, I'm not sure.
If you're willing to adjust your dates slightly and read about Southeast Asian piracy during the 1770s-1870s, James Francis Warren has written some great stuff on the Ilanun pirate scourge, including the book 'Iranun and Balangingi: Globalization, Maritime Raiding and the Birth of Ethnicity'.