How Hackers Use Cookie Theft to Bypass Email Security
11/19/2024
Cookies are small pieces of data that websites store on a user’s computer to remember login details and other preferences. A ‘remember-me’ cookie, for example, saves login information and typically lasts about 30 days before expiring. Cybercriminals target these cookies to bypass multi-factor authentication (MFA) and gain unauthorized access to email accounts.
Why is Stolen Cookie Data Dangerous?
Cookies simplify the login process by allowing users to access accounts without re-entering usernames, passwords, or multi-factor authentication codes. A ‘remember-me’ cookie is typically activated when users check a ‘remember this device’ box during login.
Cookies by themselves do not pose security risks, however, they can be used by cybercriminals to impersonate the user, collect financial data, access their accounts or to steal passwords that are stored in the browser.
If a cybercriminal obtains a stolen ‘remember me’ cookie, they can use it to bypass MFA and gain direct access to the associated email account without needing login credentials. Because these cookies circumvent standard security measures, they have become a preferred target for hackers looking to breach email accounts.
Read More: How to Protect Your Identity
Stay Vigilant Against Cyber Threats
Many victims unknowingly expose their cookies to hackers by visiting untrustworthy websites or clicking on phishing links that install malicious software on their devices. The malware that is installed once you click a scammer’s link can extract the cookie information saved in your browser.
To protect yourself, regularly clear cookies from your Internet browser, avoid suspicious links or websites, and ensure you only visit sites with secure HTTPS connections. You can see this in the very beginning of a website link. For example, the link to the Navicore Solutions website is: https://navicoresolutions.org/ HTTPS stands for Hypertext Transfer Protocol Secure.
Additionally, monitor the login history of your accounts to identify any unusual activity. If you notice suspicious behavior, change your password immediately. If there is a ‘log out of all instances/devices’ link that you can use, do it.
Katherine O’Shea is the Social Media and Content Specialist at Navicore Solutions. She creates fun and informative social media posts that engage the public. She’s also the host of Navicore’s podcast, ‘Millennial Debt Domination.’ You can listen to our podcast here.
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