ATLANTA -- New cell phone “spyware” has made it easy for just about anyone to bug your phone and uncover details of your private life, communications experts say.

The “spyware," marketed to suspicious spouses, parents and employers, can turn just about any cell phone into a high-tech spying device.

"It's frightening," wireless expert Jen O'Connell said. "It's frightening to know that your information can be compromised in such a way."

A quick search on the Internet reveals dozens of "spy phone" programs ranging from $4 to $400. Some “spyware” works on Bluetooth technology, while others require a download onto a "smart" phone, like a Blackberry or Web-based device. CBS 46 Investigative Reporter Wendy Saltzman tested Flexispy, high-end software that experts say allows people to eavesdrop on calls, download e-mails, and even track a person's GPS location at the touch of a button.

A person only needs to have the targeted phone for about 5 minutes to log onto the Internet and download virtually unrecognizable software onto someone's phone, experts say. Once the software is downloaded, it hides on the phone. The eavesdropper dials the number of the bugged phone, and can listen in to on-going telephone conversations without a trace.

"If someone really wanted to harass you and find you, there is really no limit," federal prosecutor BJay Pak said.

With Flexispy, the bugged phone automatically transfers data to the eavesdroppers’ account, recording sensitive information like phone numbers, call lists, text messages, GPS locations, and private e-mails.

CBS 46’s investigation found the phone doesn't even need to be in use to spy. The bugged device acts as a microphone. All the eavesdropper has to do is call in and the microphone clicks on, turning the cell phone into a listening device that unknowingly picks up all conversations within earshot.

Most Bluetooth technologies don't even require the eavesdropper to have the telephone in their possession to spy. Bluetooth programs can track calls, e-mails, and texts just by sending a wireless message to the targeted telephone.

"It's a landmine of federal violations," Pak said.

Pak said even possessing wiretap software is a crime.

"Just because it is easily accessible does not mean you should do it," Pak said.

Pak said that even spouses are not immune from prosecution.

O'Connell said there are ways users can protect themselves. "Keep your cell phone on you at all times," O'Connell advised. And she said never accept a Bluetooth program from anyone you do not know or trust.

O’Connell says if you’re thinking about going hands-free, use a wire. She says it is easier to tap into a Bluetooth device.

"I fear for the people who are the victims of stalking," Pak said.

TIPS YOU COULD BE THE VICTIM OF CELL PHONE SPYING:

• Your telephone clicks or makes strange noises
• You can hear background noise from an unknown area during telephone calls
• Your telephone lights up for no reason, which indicates the eavesdropper is calling in or your phone is transferring information
• Your phone will not turn off completely

IF YOU THINK YOU ARE THE VICTIM OF CELL PHONE SPYING:

• Take your cell phone to your wireless carrier and ask them to re-set your telephone to the factory settings. This should remove any software that has been downloaded onto your phone