One of the biggest security updates for more than a year is due to released today by Microsoft to fix 12 software flaws.
Nine of the updates apply to the Windows operating system and one is deemed critical, a rating reserved for the most serious security problems.
At least one of the loopholes being patched is already being actively exploited by malicious hackers.
Windows users are being urged to download the patches as soon as they become available on Tuesday June, 13th.
Microsoft issues its security patches on the second Tuesday of every month and June's update will be the biggest for more than a year.
Go to Windows Update to get the patches.