privacy / proxycheck.io

What information do you collect and store when I sign up for your service?

To ensure your privacy we collect only your email address to facilitate sending you an API Key and to send you important changes relating to our service. You are free to use any email address. If you do not use an API Key then we also store your IP Address so that our software can record how many queries you have made upto the allowed 100 per day. If you have an API Key we do not store your querying IP Address at all. We do not request or store your name, physical addresses, phone number or any other personal information.

Do you collect or store any usage/stats information relating to my account?

We record how many queries you perform with your API Key if you have one, if you do not have an API Key, we record these stats with your IP Address. We also store a list of your positive detections if you're an API key holder, this list is accessible within your dashboard. We also store for around 5 minutes the negative detections made by our API, we then run these through our machine learning engine to find more proxies to block, only proxies found this way are stored long term with the rest of the data being discarded.

What information is stored when I stop using your service?

If you have an API Key then the amount of queries you made over time and the positive detections you made will continue to be stored forever with that key. If you do not have an API Key and you're using the 100 free queries per day that don't need an API Key then we only store the amount of queries you made over the previous 24 hours along with your querying IP Address.

What is a warrant canary and why do you have one?

A warrant canary is a piece of information we publish before we receive any kind of warrant or court order to hand over user information. If at any time we were to receive such valid warrants or court orders we would remove the warrant canary warning you that our service is no longer safe for your data. You can view our warrant canary here: https://proxycheck.io/canary.txt

Who do you share my data with?

We do not share your data with anyone. Only proxycheck.io has access to your Email, API Key and Querying IP and we will keep it that way. No advertisers will be given this data, nor will we abuse your trust by sending your email spam or advertisements either from us or on the behalf of anyone else. But please note we are bound by the laws of the countries in which we operate. This is why we have a warrant canary. We will only ever give your user information out to an authority if they have a valid warrant within our jurisdiction.

If my account is protected by a password how is my password stored?

When you protect your account with a password we hash it using bcrypt. This means a unique hash is stored by us and not your password itself. These hashes cannot be reversed back into your password and to further complicate attacks we supply a unique salt to your password prior to hashing. In real terms it means we follow industry best practices and your password is still safe in the event our database is breached.


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Last updated: 17th of July 2017.17th of July 2017: Since we added a machine learning system to the service we now hold negative detections for 5 minutes so that our algorithm can examine the addresses to discover more proxies. The privacy policy was updated to reflect this change.

24th of June 2017: A new feature to the dashboard was introduced that allows you to view and download all the positive detections made by your API Key. The privacy policy was thus updated to make it clear we now do store the IP's you query (but only positive detections, negative ones are still discarded.

3rd of April 2017: A new section regarding how we store and protect your passwords was added.

31st of December 2016: Some ambiguous text was altered to make it clear we only log how many queries you make and not the IP Addresses you send us to be checked.

Some issues with third and first person speech in the privacy policy were also corrected.

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