Security flaw Heartbleed and the websites you use that are affected
Heartbleed is one of the most serious and potentially wide-reaching security flaws to be found on the internet in recent times.
Discovered by Google and software firm Codenomicon, the encryption flaw affected some of the most popular sites on the internet.
Although your passwords may not have been stolen, if you use affected websites the possibility remains that your security may have been comprised over the last two years.
Security website LastPass have created a Heartbleed checker where you can enter the website address and check if it is affected.
Below is a list of websites, checked by tech site Mashable, that were vulnerable. It is recommended that you change passwords for these sites immediately.
Google (including Gmail)
Yahoo (including mail)
Amazon Web Services
While many of the sites listed above have used patches to remedy their vulnerability by now, it is recommended that you change your password.