One fatal click on Send can lead to a security breach causing confidential information to get in the wrong hands. The worst email habit by far is assuming a sender is who they say they are. Phishing attacks are email messages designed to trick you into giving up information. Using personal email for work is insecure and potentially damaging to your organization. Never use your work email for personal activities. Use a virtual private network (VPN) to protect your connection if you ever find yourself working away from a secure network.”]
Source: https://informationsecuritybuzz.com/articles/bad-email-habits-die-hard/