Shares of cybersecurity stocks were mixed Friday as a global ransomware attack spread throughout Europe, Asia and the U.S., crippling telecom companies and Britain's National Health Service.

The PureFunds ISE Cybersecurity ETF (HACK - Get Report) edged lower, falling 2 cents, or 0.07%, to $29.74.

Among individual players, FireEye (FEYE - Get Report) rose 34 cents, or 2.35%, to $14.79.

Palo Alto Networks (PANW - Get Report)  gained $1.31, or 1.14% to $116.46.

Check Point Software (CHKP - Get Report) rose $1.88, or 1.78%, to $107.60.

Symantec (SYMC - Get Report) lost 45 cents a share, or 1.435, to $31.01.

Shares of Cyberark  (CYBR - Get Report) fell sharply on disappointing second-quarter guidance. The stock fell $6.86, or 12.44%, to $48.29.

The ransomware exploited Microsoft (MSFT - Get Report) software to lock up files on infected computers and demand payment of around $300 in bitcoins. Microsoft shares fell 8 cents, or 0.12%, to $68.38.