India, June 17 -- Your inbox often fills with unwanted emails, and many messages end with a familiar phrase: "Click here to unsubscribe." But cybersecurity experts now warn that hitting that unsubscribe button might not be as safe as you think. In some cases, clicking the link could expose you to new online threats.

When you click an unsubscribe link, you leave the protected environment of your email client and enter the open web, said Keanini, a cybersecurity expert, to The Wall Street Journal. This transition can put you at risk, as some unsubscribe links lead to malicious websites. According to DNSFilter, about one in every 644 clicks on unsubscribe links directs users to harmful sites.

One common danger is that attackers use unsubsc...