Recently, a serious security breach occurred in your organization. An attacker was able to log in to the internal network and steal data through a VPN connection using the credentials assigned to a vice president in your organization. For security reasons, all individuals in upper management in your organization have unlisted home phone numbers and addresses. However, security camera footage from the vice president's home recorded someone rummaging through her garbage cans prior to the attack. The vice president admitted to writing her VPN login credentials on a sticky note that she subsequently threw away in her household trash. You suspect the attacker found the sticky note in the trash and used the credentials to log in to the network. You've reviewed the vice president's social media pages. You found pictures of her home posted, but you didn't notice anything in the photos that would give away her home address. She assured you that her smart phone was never misplaced prior to the attack. Which security weakness is the most likely cause of the security breach