In recent months, technology companies have come under increasing public scrutiny as they aim to strike a delicate balance between allowing free user expression on their platforms and preventing abuse.

Last Tuesday, U.S. President Donald Trump took aim at Facebook, Google and Twitter as he said the platforms were "treading on very, very troubled territory and they have to be careful."

Trump's remarks came after he alleged that Google had "rigged" its search engine to prioritize left-leaning media outlets as well as negative news about him and other conservatives.

Representatives from Facebook, Google and Twitter are set to testify before Congress this week to discuss issues such as censorship and election meddling.