How to blow the whistle on Facebook – from someone who already did

This April, Sophie Zhang told the world about her employer's failure to combat deception and abuse. Her advice? No screenshots, lawyer up - and trust yourself

Two years ago, I did something I almost never do: I put on a dress. Then I dropped my phone and other electronics off at the home of friends who had agreed to tell anyone who asked that I was at their place the entire time, and headed to the Oakland offices of the Guardian for my first meeting with a reporter.

Leaving my electronics was a safeguard against possible tracking by my then employer, Facebook. The dress was an additional layer of alibi: I theorized that if anyone from work saw me and could contradict my first alibi, they might conclude that my unusual behavior was evidence of nothing more than an affair.