If hackers can get into Dwyane Wayde’s Twitter account, they likely can get into anyone’s.  

Nobody knows that more than Mark Wuergler.  

"I'm the nicest guy you ever met," said Wuergler.  

He runs a company called Immunity Inc.  It helps protect local businesses from hackers by actually trying to hack into their systems. Once the weak spots are identified, they can be fixed. 

During Local 10’s interview with Wuergler, the hacker sat back and let his computer do the work, finding names, passwords and personal information of people who were using a nearby, unsecured network.  

Lucky for those folks, Wuergler is using his computer knowledge for the greater good.  

"If you understand how you're being hacked, it's going to be easier to protect yourself," said Wuergler. 

He warns people about posting sensitive information on social media sites. 

"The larger the sites, the more likely it is to come under attack," Wuergler said. 

He says there is a simple rule of thumb to follow. 

"The more convenient something becomes, the less secure it is," he said. 

The Department of Homeland Security agrees.  Representatives were in South Florida promoting their Stop, Think, Connect campaign that talks specifically about passwords.  

"You need numbers, upper-case letters, lower-case letters. Make it hard for someone to guess," said Gregory Schaffer with the DHS. 

He and Wuergler both said people should never use the same password on multiple accounts, and watch out for the easy answers to forgotten password questions.  

"If I know your mother's maiden name and your pet’s name, which I can get from social media sites, I can prove that I'm you," said Wuergler.