Two leading security firms have been accused of ripping off customers by cutting short their antivirus subscriptions. AVG and Symantec are offering their own customers discounts on subscriptions via email or pop-ups, but the new subscriptions start immediately, ‘short-changing’ users who had months left on their existing deal. Both Symantec and AVG owned up to the practice, and said they had no plans to change their ways, instead advising their customers to upgrade as close as possible to the end of the subscription. However, the pair actively send out emails and pop-up messages that encourage customers to upgrade immediately.