Email hack checker: Check if your Email has been hacked

“Has my Email been hacked?.” Millions of users around the globe ask themselves this question when an attack by a hacker on a big company becomes public knowledge. Customers and users of the affected site are concerned about their data, especially if they use the corresponding password for their Email account. Countless account details are stolen every year due to these hacking attacks, Trojans, and phishing scams.

One example is the internet portal, Yahoo, which fell victim to a major cyber attack in August 2013. More than 1 billion user accounts were compromised, making it the largest breach of its kind in history. If hackers are in possession of access data, the damage can be considerable. Our overview shows you how to check if your e-mail has been hacked and which websites and tools can help you.

Criminals can use a hacked e-mail account to steal your identity. This is known as identity theft. This allows hackers to access your contacts, purchase goods in your name, or misuse your account to send spam or Trojans. This can lead to significant financial damage. Online stores, for example, will take money from your account even though you didn’t make the purchases yourself and you will also be held accountable for any criminal actions that originate from your e-mail account.

The financial implications can also affect others e.g. if your e-mail account sends out Trojans that paralyze company networks. It is, therefore, all the more important to secure e-mail accounts with strong passwords and, ideally, with two-factor authentication.

Fortunately, it isn’t too difficult to work out whether your e-mail account has been hacked: there are websites, for example, which can be used to determine whether an e-mail account has been hacked by analyzing botnets or data breaches. Botnets are networks of thousands of infected computers, which are usually used for criminal purposes without those affected knowing. The bot software usually infiltrates the victim’s computer through fake e-mail attachments.

In addition, the site offers other features e.g. the “notify me” feature. HIBP will let you know if your e-mail address or username ever come up in any future data breaches. All you have to do is enter your e-mail address and solve a small captcha puzzle for security reasons. The purpose of this is to identify that you’re a real person and to protect the service from bots. If you aren’t sure whether you have been affected by a popular website that has had its data security breached, you can look at the “Who’s been pwned” tab to obtain an overview of previous data breaches and their extent.

In addition, the service also offers the possibility of signing up for their notification service Email Watchdog: if the password corresponding to a listed e-mail address is published online in the future, BreachAlarm immediately sends you a warning e-mail. This enables users to react quickly and change their passwords - hopefully before something really dramatic happens. Another feature that is mostly suited to business users can be found under the tab entitled “Business”: here you can enter company domains and have them checked. In just a few clicks, you can determine how many employee accounts have been affected by a possible data breach. This feature also comes with a “warning” mode for possible password theft in the future.

An e-mail will be sent from the HPI institute to the address you entered, stating whether your account has been hacked and personal details have been shared online. In addition, HPI will reveal when and how the data theft occurred.

All four tools provide you with reliable information and check whether your e-mail has been hacked. There’s never a 100% guarantee that your account hasn’t been hacked. If the tool doesn’t find anything, the probability that unauthorized persons have access to your account is minimal. For security reasons, however, you should regularly change your passwords. But what should you do if you become a victim of data theft? Don’t panic: the hackers probably haven’t done anything malicious with your account yet. You should change your password immediately. We prepared an article on what to do if your e-mail account is hacked.