Bitcoin is pictured.

The Medford Police Department is warning residents to protect themselves from a scam that involves blackmail extortion.

“Victims have reported receiving emails from individuals claiming to have personal, incriminating information and demanding payment via Bitcoin to prevent its release,” according to a Wednesday afternoon news release. “This is a scam.”

Police “strongly advise” people to not pay the ransom, the release said.

“If payment is made, the scammer will likely continue to exploit the victim for more money,” according to police. “Instead, delete these emails like any other junk mail. If the emails persist, contact the Medford Police Department.”

Police say online scam artists are continually evolving their tactics. To protect yourself, MPD recommends:

• Do not open emails from unknown senders.

• Do not click on suspicious attachments.

• Be cautious when interacting with unfamiliar individuals on social media.

Police say if people receive these emails, report them to the FBI’s Internet Crime Complaint Center at www.ic3.gov.