‘It might work too well’: the dark art of political advertising online

Digital campaigns have evolved from banner ads 20 years ago to Cambridge Analytica harvesting our Facebook data. Has the rise of micro-targeting become a threat to democracy?

My advice after a year without tech: rewild yourself

We can’t all go and live in the woods, of course. But if we resist debt, resist gadgets, and reconnect with nature, the world might just change, writes Mark Boyle

The Guardian view on free speech online: let law decide the limits

Editorial: The standards by which the internet is controlled need to be open and subject to impartial judiciaries – not left to advertisers

Breach leaves Facebook users wondering: how safe is my data?

Claims that Cambridge Analytica used data to target voters in US election raises tough questions

No one can pretend Facebook is just harmless fun any more

From its stance on extremist content, to its vast caches of user data, Facebook is a corporation whose power must, finally, be reined in, says freelance journalist Ellie Mae O’Hagan

‘I made Steve Bannon’s psychological warfare tool’: meet the data war whistleblower

Christopher Wylie goes on the record to discuss his role in hijacking the profiles of millions of Facebook users in order to target the US electorate

Cambridge Analytica: links to Moscow oil firm and St Petersburg university

Data company gave briefing to Moscow firm Lukoil, and the lecturer who developed the crucial algorithm worked for St Petersburg university

Facebook apologises for search suggestions of child abuse videos

Searches starting ‘video of’ returned autocomplete suggestions of sexual videos and child abuse content

‘They’ll squash you like a bug’: how Silicon Valley keeps a lid on leakers

Working for a tech company may sound like all fun and ping-pong, but behind the facade is a ruthless code of secrecy – and retribution for those who break it

Meet the tech evangelist who now fears for our mental health

Belinda Parmar was a passionate advocate of the digital revolution – but has started keeping her family’s smartphones and laptops locked away to protect her loved ones. Is she right to be so worried?

UK could rethink social media laws after Brexit, says minister

Matt Hancock says withdrawal offers chance to write laws that are ‘right for the modern times’

WhatsApp sharing user data with Facebook would be illegal, rules ICO

Data protection watchdog forces firm to sign an undertaking declaring it will not share user data with parent company before GDPR

Sri Lanka accuses Facebook over hate speech after deadly riots

Social network blamed for contributing to anti-Muslim riots that left three people dead