5 things you should know about email unsubscribe links before you click
We all get emails we don’t want, and cleaning them up can be as easy as clicking ‘unsubscribe’ at the bottom of the email.
However, some of those handy little links can cause more trouble than they solve.
You may end up giving the sender a lot of information about you, or even an opportunity to infect you with malware.
Of course, not everyone who sends you mail is a spammer and if you know that a sender is trustworthy it’s safe to unsubscribe.
Unfortunately phishing attacks rely on the fact that it’s very, very easy to fake who and where an email has come from so it’s all but impossible to be 100% sure who has sent you an email.
Here are 5 reasons why unsubscribing can be a bad idea, whether you do it by sending a reply email or opening an “unsubscribe” web link:
1. You have confirmed to the sender that your email address is both valid and in active use.
2. By responding to the email, you have positively confirmed that you have opened and read it and may be slightly interested in the subject matter, whether it’s getting money from a foreign prince, a penny stock tip or a diet supplement.
3. If your response goes back via email – perhaps the process requires you to reply with the words “unsubscribe,” or the unsubscribe link in the message opens up an email window – then not only have you confirmed that your address is active, but your return email will leak information about your email software too.
4. If your response opens up a browser window then you’re giving away even more about yourself. By visiting the spammer’s website you’re giving them information about your geographic location (calculated based on your IP address), your computer operating system and your browser.
5. The most scary of all: if you visit a website owned by a spammer you’re giving them a chance to install malware on your computer, even if you don’t click anything.
READ MORE: https://nakedsecurity.sophos.com/2014/09/04/5-things-you-should-know-about-email-unsubscribe-links-before-clicking/