In this first image, you see someone with their phone out. What you are doing may be innocent and not involve any classified information, it is always best to be aware of your surroundings when people are around. You never know what the blind eye may see.
In this second photo, this group is undergoing some training and it is clear that may individuals are not taking it seriously. In cybersecurity, operational security (OPSEC) training is very important. People who do not work in tech may not think so, but they will also be the ones to click the link they aren’t supposed to or respond to that suspicious phishing email.
Finally, and my favorite, the classic phishing email. I continuously get phishing attempts, and I usually either mess with the sender or leave them be. But to someone who doesn’t know any better, this is a nightmare if you click that link. Depending on how savvy the person phishing is, they can compromise quite a bit of information using very little input. So don’t click the link!