There are countless firms that sell expensive computer security products and gear. But most experts will tell you that the one step you can take to most improve the security of your home or work computer is to have and follow strict password security. But what makes a password strong (or weak)? And what tricks might hackers, malware authors and cyber criminals play to get you to part with yours? Paul Roberts of Threatpost speaks with David Emm of Kaspersky Lab about proper password hygiene and the steps you need to take to secure access to your critical online and offline accounts.