Using the word “password” — or something else simple to remember — for your actual computer password might be an easy way to remember your login credentials. But it could be the biggest thing making your computer system vulnerable to hackers.A recent report by Verizon that looked at cyber attacks on health care organizations in 2011 and 2012 found that 72% of them were caused by hackers guessing, or using automated systems to guess, the passwords and other credentials that allowed them access to computer systems.Practices are required under the Health Insurance Portability and Accountability Act and meaningful use rules to perform security assessments.