She was the first person to get a detailed look at Facebook’s new dating feature before the designs were released to the public.

She discovered that Airbnb was testing a new flight integration feature that alerted hosts on the website when their guests’ planes landed safely.

And she sounded the horn when Instagram began experimenting with augmented reality profile pictures.

Silicon Valley’s tech firms like to make a splash when they unveil new features. But half a world away, a Hong Kong-based software engineer has made it her ambition to spoil their scoops.

Jane Manchun Wong is a 23-year-old technology blogger and app researcher famous for uncovering new features before they launch.

By reverse-engineering popular apps such as Facebook and Instagram, she is able to preview changes

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