Most websites you visit in your browser will ask you to accept or reject cookies, and for the most part, these cookies can be helpful and they're supposed to have a limited lifespan. Browser cookies can remember what's in your shopping cart or save your login status on a website, making your browsing experience easier.
Unfortunately, a recent report from CloudSEK researchers (via BleepingComputer and Android Police) outlines how hackers have been using a zero-day exploit to restore expired Google authentification cookies. Put simply, this exploit means that hackers can use your expired browser cookies to bypass two-factor authentication and gain access to your Google account.
