LifeLock is offering an exclusive deal to NextAdvisor readers—15% off and 30 days free (Promo Code: next1530). This discount applies to both LifeLock and LifeLock Ultimate, but it’s only available until November 23, 2012 (otherwise known as Black Friday).

The 15% discount brings the price of LifeLock down to $7.79 per month with an annual prepay, or $8.50 per month if you choose to pay monthly. To put it in plain English, if choose the annual plan you’ll be saving a hefty $16.50. LifeLock is a great identity theft protection service, and features proactive monitoring of your personal information, lost wallet protection, 24/7 customer service, fraud resolution, annual credit report updates and identity theft insurance.

This 15% discount also applies to their more robust service – LifeLock Ultimate. LifeLock Ultimate includes every feature that LifeLock provides, but also offers 3-bureau credit monitoring, monthly updates to your TransUnion credit score, and more comprehensive identity theft protection. LifeLock Ultimate is $19.48 per month with an annual prepay, or $21.25 per month with monthly payments after your free trial. That means if you select the annual plan you’ll be saving a whopping $41.50.

Whichever one you choose, the 15% off and 30-day free trial is only available until November 23rd, so take advantage of the money-saving offer now before it expires.