Recently a security flaw in LinkedIn’s code has helped add 6.5 million passwords to attackers??? traditional dictionary attack. What is a dictionary attack? It’s an attack where hackers (we assume the bad kind here) run scripts against a combination of common usernames and passwords. Thanks to LinkedIn, 6.5 million common passwords have been added to the arsenal of checks they use for their dictionary attacks. So what can you do to help protect against these attacks? Developers who require authentication for your sites, these tips are for you too!