I think old people and the less tech-savvy users are exactly the people who would notice something like this. The less a person understands about computers, th

I think old people and the less tech-savvy users are exactly the people who would notice something like this. The less a person understands about computers, the more they rely on habit to use them. My mother calls me to ask what she should do whenever the tiniest change or unexpected balloon pop-up appears. The answer is invariable always the same: "Ignore it". But she calls every time, without fail, regardless. So you might not notice the security image at all. My mother, who's used to her bank website always looking a certain way, will become very concerned when the security image is missing.