These days, data breaches are growing more numerous — and more worrisome. After all, how are you supposed to protect your passwords and login information when they are being stolen from enormous company databases that you have no control over?

The best way is to find out if you security has been compromised ASAP so you can take personal action, which is precisely where data breach detection websites come into play. These sites allow you to securely search through the latest hacked data to see if any of your sensitive information is at risk. We’ve rounded up four of the best for you to use based on your security needs, so let’s dive in.

How do these websites work?

These hack searchers typically work by aggregating data from other sources commonly used to seek hacked data and share it with others. These secondary sources — Pastebin, individual leakers, dark web forums — can be nefarious, which makes it very easy for enterprising hackers to access passwords and login info from data breaches and try them out. Hack search sites, however, use such data tricks as a force for good, allowing you to peek into the same data breach info and see if your own info is there. If it is, you can then change your login data to protect yourself from future trouble.

Unfortunately, there are security sites that ironically just want to collect your email and login info for future fraud attempts. Others try tools and features that aren’t well-understood and end up creating even more serious data breaches before abruptly collapsing.

In other words, picking reliable breach tracking sites is vital. That’s why we’ve gathered a group of sites that you can trust.

Have I Been Pwned is one of the oldest, most popular, and best sites in the game. The site works hard to track down breaches, verify them as legitimate, and nab data so you can check it out.

Once you log onto the site, you’ll be greeted with a basic search bar and a list of current breaches. At the time of this writing, that includes a massive Adobe breach and the infamous Ashley Madison breach. Just type in your email or username, and the site will search the breached data and showcase any red flags. You can also search more sensitive breaches, but only if you take the time to verify your email address. There’s also an option to deep link straight to a particular account, so you can instantly bring up results for one particular email address if you plan on doing a lot of repeated searches.

It’s a simple tool that still allows for some customization as needed. Moreover, it’s obvious that Hunt really cares about this sort of white hat work, as well as educating users on the dangers of data breaches.

BreachAlarm has been set up, perhaps a little too obviously, as a competitor to Have I Been Pwned. But that doesn’t make this site a poor choice. In fact, it’s a bit more professionally designed and offers more watchlist options for those looking to get notifications about any potential breaches.

Some of the more complex services require fees, though, and can cost you an upwards of $30 a year for service packs that, honestly, you probably don’t need. If you are looking for a service more oriented toward small businesses or large families, you may prefer BreachAlarm and it’s highly organized approach to data breaches. But there’s also no law against checking multiple hack verification sites just to make sure!

Hacked Emails is a one-man project very similar to Have I Been Pwned, but with a focus on email instead of both email and usernames. It doesn’t boast many standout features, but the site is easy to use and values anonymity for all parties involved. The site design is also clean, refreshing, and generally good at proving that it’s not a scam.

Sucuri’s Security Scanner takes a different approach — it allows you to check an entire site for any signs of bugs, blacklisting, security vulnerabilities, and the presence of hackers. It’s an ideal tool for bloggers and online businesses, but it should be used in addition to other sites that check emails and usernames, just to be safe. Sucuri also offers a broader suite of security and malware removal services than most, with monthly fees that start at $17 a month.

Simply use Google to find the URL’s for the above sites and have fun checking out your email addresses!