The other day, when my friends laptop spit-up a warning from ZoneAlarm that she was no longer protected, I stood over her shoulder and instructed her to update the firewall. The warning was basically a scare tactic, of course. Without the update she would still be protected, just as protected as she had been the day before. She just wouldn’t have any new whiz-bang features included in the update, nor would she be able to take advantage of any new security enhancements.
We ran the default install. This was Windows, so there had to be a reboot. After that, we opened the browser to find that the homepage had been reset to a ZoneAlarm themed Google search page. We had not opted-in to any such change; the ZoneAlarm folks had just taken it on themselves to hijack Firefox;’s revenue