
Hong Jia Ming, 34, made her plea after the charge was read out to her by an interpreter before judge Nor Hasniah Ab Razak, Harian Metro reported.
She will have to serve six months in jail if she fails to pay the fine.
Hong was said to have uploaded a post to her Facebook account deemed offensive to Islam two years ago.
She was charged under Section 233 of the Communications and Multimedia Act (CMA) 1998 for improper use of network facilities, which carries a maximum fine of RM50,000, a one-year jail sentence, or both upon conviction.
Hong’s lawyer, Haijan Omar, urged the court to consider her status as a single mother when passing sentence.
The prosecution was led by deputy public prosecutor Najihah Farhana Che Awang.