One wrong click. That's all it takes to breach privacy and reveal the personal information of every recipient on an email list.
Just landed a great internship at the White House? CC: your mom on it in a reply and your bosses just might wonder about your ability to keep things professional in the workplace.
According to a 2011 poll by digital communication company VaporStream, 60% of employees occasionally hit “reply all” on e-mails when they intend to respond only to one person.
Think carefully about who you CC: or BCC: on your emails. Remember that when you CC: someone, you're revealing their address to everyone who receives the message. This could lead to a slew of problems from undesirables harvesting emails, to office embarrassment upon revealing personal tidbits to undesired recipients.