A survey by ProtonVPN found that social media sites were the most common website type to suffer a data breach, followed by gaming and technology websites.

According to the Adobe Consumer Email Survey Report 2017, e-mail is the preferred method of communication at work, with about 36 percent of respondents using it.

France has passed legislation that makes it illegal for companies of 50 or more employees from sending emails after typical work hours.

McDonald's said that customer information was exposed after a security breach involving an email marketing management firm.