The websites for local radio stations WTOP and Federal News Radio are now malware free after they were the victims of a cyberattack last week.

WTOP first posted news of the hack to its site last Tuesday, according to The Washington Post. But the station only sent out an email yesterday to its registered users informing them that their computers may have been infected with malware if they visited the site between May 5 and 7.

The hack caused Internet Explorer users to be redirected to a malicious site that downloaded fake antivirus software on their computer, leading WTOP to shut down access to the sites through the browser. From WTOP’s press release:

Computers infected with the malware may display a pop-up message indicating that the computer is infected with a virus. This pop-up message may be fake if it prompts the user to click on a link, which takes them to a website that is not recognized by the user. This fake website offers security software for sale and prompts users to provide personal information, including credit card numbers. Users should not provide information, if prompted to do so.

Not giving credit card information to random websites is good advice, even if you don’t browse WTOP.

The database of WTOP and Federal News Radio email users may have been compromised, according to the press release, but there isn’t any “evidence that any log-in information was actually acquired by the hackers.” Passwords, however, were reset.