Anthem Cyber Attack: 5 Things That Could Happen to Your Personal Information

As many as 80 million customers' information may have been accessed by thieves.

A social security number opens a host of ways thieves can steal a person’s identity for financial, medical or other gain, Matt Cullina, CEO of IDT911, tells ABC News.

With information gleaned from the Anthem breach, thieves could potentially do these five things:

1. File and steal tax refunds

Tax identity cases were up 135 percent in 2014 from 2013, according to the IDT911 fraud center, likely due to the rash of breaches exposing personal information.

2. Open new credit cards

3. Apply and secure a loan

4. Apply for a job

An undocumented worker or someone looking to rid of their troubled past could use the information for your stolen identity to find work.

5. Pursue medical treatment

Medical identity theft, another growing result of exposed personal information, allows a thief to use patient information to file fraudulent claims, open lines of credit and pursue treatment with someone else's identity. As many as 1.84 million people may have been affected by medical identity theft in 2013, according to the Ponemon Institute LLC.

Anthem will individually notify current and former members whose information has been accessed, Anthem CEO and president Joseph Swedish said on a website dedicated to the issue, The company said it will also provide free credit monitoring and identity protection services.