Is it permissible for me to live off the money of my husband, who worked as a security guard in a place that sells alcohol before our marriage, and then moved to work for an electronics company?

The husband's work as a security guard in a market where alcohol is sold is permissible if he has no involvement with the sale, purchase, transport, or promotion of alcohol. His earnings are lawful, although seeking another job would be better. His work in an electronics company is permissible unless he knows that the buyer will use the items for illicit purposes, in which case he must refrain from selling to that person, analogous to selling grapes to someone who will press them into wine. Based on this, there is no harm in the husband working for an electronics company with this condition, and his earnings are lawful, and living off them is permissible.