21. Botnets Botnets are sets of machines, all controlled by a ‘bot herder’ Often machines are infected when visiting a website Largest botnet found so far had > 1,000,000 machines in it
27. How have things changed? Attacks often less personal, but bigger DDOS attacks can be too big to resist Web servers valuable as a way of spreading exploit code It’s not about fame anymore, but money
28. How does this affect you? Reputational loss Potential for damages if you can’t show due care Copyright violations on your servers DDOS attacks against you
29. What can we do? Follow best practice Occams razor - don’t multiply servers! Code audit/review/pen-testing Network design (DMZs, firewalls etc)