Four former employees of Uber Technologies have accused the company of blocking them from disclosing "a number of deeply troubling practices at Uber that have not been publicly revealed." They were responding to Uber's complaint accusing them of improperly taking confidential records when they left the company. Uber said they used the information to draft their own lawsuit against it.

A former Facebook employee has accused the company of having a 'black people problem' in an internal memo. "Facebook's disenfranchisement of black people on the platform mirrors the marginalisation of its black employees," Mark Luckie, former manager of partnerships at Facebook said. "In some buildings, there are more 'Black Lives Matter' posters than there are actual black people," he added.

More than 30 Google employees have joined a petition protesting the company's plans to build a search engine that complies with China's online censorship regime. An employee-led backlash against the project has been churning for months at the company, but Tuesday's petition marks the first time workers at Google have used their names in a public document objecting to the plans.