But during a Senate hearing last year on criticism in the media, Mr. Duterte’s social media team exposed Ms. Laurio as the force behind the blog. Within days, the president’s supporters were making threats against her and publishing her personal information, including her home address and where she studied.

“I wrote behind the cloak of anonymity, because when you write something against the government, about the children who are orphaned in this war on drugs, and if you call out the administration for false claims, you receive hate from the government’s army of trolls,” Ms. Laurio said in an interview during an event for the release of a book based on her blog. “But the threats are not enough to invalidate the issue that I am trying to point out: that the government lies.”

Still, she is worried, despite having the bodyguards her friends are helping to pay for. And there is cause.

On Monday, the government revoked the license for Rappler, an independent news outlet that has been a leading reporter of deaths and abuses in Mr. Duterte’s drug war. One of Mr. Duterte’s backers has directly taken aim at Ms. Laurio, accusing her in a lawsuit of online libel. She has countersued.

Another sent her an online message in which he threatened to smash her face with a baseball bat the next time he saw her — suggesting he was watching.