"Since the Prime Minister’s Office website was hacked, I've had to endure reading totally inaccurate news about it," the 29-year-old man from Nakhon Si Thammarat wrote on his Facebook page on Thursday.
Mr Narongrit said he drew the line when he saw a news story headlined "Hacker's mum weeps as she insists her son is innocent", with a picture of his mother in tears.
"I have posted comments to save the face of various people. But I want to know, if they saw a news story about their mother pleading their innocence, with an attached picture of their mother crying, would they remain silent?" he said.
He also responded to the negative comments posted on many web boards.
"If you had any knowledge of computers and knew me personally, you wouldn't come up with such posts," he said.
Mr Narongrit was adamant he had never visited the PM's Office website, not even on the day it was hacked.
He said that if police remain convinced that he is guilty then he would like to give them some pointers.
He suggested that the TCSD provide a video recording showing all the procedures performed on his computer during the investigation.
The police should conduct their forensic investigations under the proper ISO standard, and draw up a standard for digital forensics, so that Thailand does not fall behind the rest of the world.
If they were not up to the task, or do not understand the concept, then they should get people with master's degrees and doctorates to help them out, he said.
Mr Narongrit said he had given technical advice that he believed could to be useful to investigators, and had provided them with a lot of evidence.
TCSD deputy commander Pol Col Siripong Timula had on May 9 told him to not worry about the published news, he said.
But instead of confirming his innocence and correcting the news stories, police later told the press that they had uncovered more evidence that suggested he was guilty.
"I have obtained the information that can pinpoint the hacker as promised. If the police don’t speak the truth, as they agreed on Monday they would do, then I will keep the data and wait to see if they can discover it on their own.
“The forensic team's task will become increasingly difficult the longer the political game continues,” the accused hacker said
Pol Maj Gen Pisit Paoin, TCSD commander, said on Tuesday that investigators believed Mr Narongrit had broken into the PM's Office website three days before the abusive messages were posted, but he did not change anything on the site.
The suspect allegedly shared with fellow hackers the information he stole from the computer system at the PM's Office, Pol Maj Gen Pisit said.
He said this was a violation of Section 5 of the 2007 Computer Crimes Act. If convicted, the suspect could face up to five years in jail and/or a maximum fine of 100,000 baht.
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