Security software is essential to ensure that your online experience is hassle-free and your personal data is safe. We've got 20 copies of Kaspersky Internet Security 2012 to give away -- a great way to protect your computer.
We know that many Lifehacker and Gizmodo readers end up acting as tech support for friends and relatives. So for your chance to win this prize, we want to know: what's the worst tech disaster you've had to help someone fix?
The 20 stories we find the most amusing and interesting will win a copy, so tell us your tale in the comments. The competition is open until October 3. You can check the full terms and conditions here.