Public WIFI bad and VPN is needed. Busted: On the Security and Privacy Properties of Public WiFi
Antiviruses protect you from all malwares. Busted Badness Enumeration | PrivSec - A practical approach to Privacy and Security
https/lock icon means website is secure and safe. Busted Chromium Blog: An Update on the Lock Icon and google made an actual effort into countering that misunderstanding.
What other myths have you guys heard and are very common across people etc?