Gemma Bagayaua-Mendoza


Follow her on Twitter via @gemmabmendoza
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Gemma is a journalist and a geek. After finishing AB History at the University of the Philippines in Diliman, she played around with databases, crashed a few computers and learned to put them back together again along the way. She received her web publishing training at the Stockholm University in Sweden as well as in multimedia journalism at the SEACEM in Kuala Lumpur, Malaysia.

At home with gadgets and gizmos, the instinct to tinker as well as the determination to manipulate the forces of technology to serve the ends of journalism continues to move her today. Gemma facilitated the transition of Newsbreak magazine from print to the World Wide Web. As Editor-in-chief of, she played a key role in developing the online and social media components of the highly interactive Harapan series of ANC and ABS-CBN towards the 2010 elections. At Rappler, she serves as the bridge between the editorial and the technical.

She co-authored Newsbreak's latest book, "The Enemy Within," on military corruption and civilian neglect. Her stories on governance & corruption, the security sector, disasters, and other social issues have won recognition in the Jaime V. Ongpin Awards for Investigative Journalism, the UNICEF-Philippine Press Institute Awards for Child-friendly Journalists, and the Asian Development Bank Institute’s Developing Asia Journalism Awards.

Offline, Gemma prefers action-suspense and romantic comedies over art films, and will eat any part of a chicken, except for the legs.

Mar 2020
THOUGHT LEADERS 10:27pm, Mar 25, 2020
[ANALYSIS] Fighting the COVID-19 pandemic: How do we 'heal as one?'

We were not alone in underestimating the COVID-19 threat. With every country inextricably linked to China, where this disease started percolating, the rest of the world was similarly caught ...

Dec 2019
RAPPLER IQ 10:25am, Dec 19, 2019
Who is Toto Mangudadatu?

MANILA, Philippines – Esmael "Toto" Mangudadatu was vice mayor of Buluan town in Maguindanao in 2009, when the Maguindanao massacre happened. The massacre victims included one of his wives, Jenalyn, ...

Nov 2019
INVESTIGATIVE 07:06pm, Nov 22, 2019
Networked propaganda: False narratives from the Marcos arsenal

READ: Part 1 | Networked Propaganda: How the Marcoses are using social media to reclaim MalacañangREAD: Part 2 | Networked Propaganda: How the Marcoses are rewriting history MANILA, Philippines – ...

INVESTIGATIVE 08:55pm, Nov 21, 2019
Networked Propaganda: How the Marcoses are rewriting history

READ: Part 1 | Networked Propaganda: How the Marcoses are using social media to reclaim Malacañang MANILA, Philippines – From the time Rappler started ramping up its fact-checking efforts, it has ...

INVESTIGATIVE 09:13pm, Nov 20, 2019
Networked propaganda: How the Marcoses are using social media to reclaim Malacañang

MANILA, Philippines – Massive amounts of propaganda and targeted disinformation produced and amplified by an extensive network of websites, Facebook pages and groups, YouTube channels, and social ...

May 2019
ELECTIONS 03:09pm, May 17, 2019
Comelec turns over Transparency Server logs to PPCRV

MANILA, Philippines - After a two-hour back-up process, the Commission on Elections, on Friday, May 17, turned over the Transparency Server logs to representatives of the Parish Pastoral Council for ...

BLOG 03:02pm, May 16, 2019
[OPINION] What happened inside the server room

This is a #PHVote newsletter sent to subscribers on May 15, 2019. I’m Gemma Mendoza, Rappler research head and leader of the Rappler team that processed election results from the Pope Pius Catholic ...

2019 12:39pm, May 15, 2019
Was transmission of 2019 PH election results better or worse?

MANILA, Philippines – How did the process of releasing election results via the Transparency Server this year compare to previous years? If you go by the actual number of precincts received and ...

BLOG 09:00am, May 10, 2019
[OPINION] How well do you know the candidates?

This is a #PHVote newsletter sent to Rappler subscribers on May 6, 2019. I am Gemma Mendoza, head for research, partnerships, and strategy at Rappler. I lead the team that gathers data for our ...

Jan 2019
THOUGHT LEADERS 02:11pm, Jan 13, 2019
[OPINION | Data Matters] Learning from DFA's passport data fiasco

Since everybody including their mothers weighed in on Foreign Secretary Teddyboy Locsin's rather colorful statement that the past passport contractor has "made off" with our passport data, I could ...