You can't sue on formal grounds, you need a material claim that your rights have been hurt. reckless negligence sounds like a criterion to determine whether the

You can't sue on formal grounds, you need a material claim that your rights have been hurt. reckless negligence sounds like a criterion to determine whether the damage is actually a liability of the defendant. And that you had to install a patch, which is available according to other comments, is likely not enough. Unless there are rules I don't know about, or you can construct an argument that backdoors were per se illegal. Maybe you could claim that someone is offering copyrighted material on the internet, because that's illegal per se, no downloading required, but beware of the backfire.