Hackers are exploiting a 19-year-old bug found in archived and '.zip' file extracting software WinRAR to install malicious software, software security company McAfee claimed. Hackers are attempting to reach vulnerable systems before users install the February 26 software patch, McAfee said. "One recent example piggybacks on a bootlegged copy of Ariana Grande's hit album 'Thank U, Next'," it added.