This week on Q+A, how fragile is our democracy? With cyber-crime on the rise, politicians and their families coming under violent attack and existential threats looming – how can we protect ourselves and the system that has served us for so many years?Millions of Australians have had their private data stolen by hackers, revealing just how vulnerable big companies are to ransom attacks. So what more can we do as individuals to protect ourselves? Has government dropped the ball on cyber security?Meanwhile, Elon Musk's Twitter takeover is causing a storm, with mass layoffs and companies pulling their advertising dollars over the Tesla billionaire's changes. Is it the end of the road for the social media giant? What would a world without Twitter look like?Joining David Speers on the panel:

Anne Aly, Minister for Early Childhood Education and Minister for Youth
Dan Tehan, Shadow Minister for Immigration and Citizenship
Kamila Shamsie, Author
Joe Siracusa, Professor of Political History and International Security
Alastair MacGibbon, CyberCX chief strategy officer and former national cybersecurity advisor.