From fake news to conspiracy theories, from pandemics to politics, misinformation may be the defining problem of our era. Like a virus, misinformation infects our minds – altering our beliefs and replicating at astonishing rates. Once the virus takes hold, our primary strategies of fact-checking and debunking are an insufficient cure. In Foolproof Sander van der Linden describes how to inoculate yourself and others against the spread of misinformation, discern fact from fiction and push back against methods of mass persuasion. Everyone is susceptible to fake news. There are polarising narratives in society, conspiracy theories are rife, fake experts dole out misleading advice and accuracy is often lost in favour of sensationalist headlines. So how and why does misinformation spread if we’re all aware of its existence? And, more importantly, what can we do about it? Sander van der Linden takes us through the psychology of conspiratorial thinking and equips us with the eleven antigens needed to help stop the spread of misinformation once and for all.