Hello, I am Jolanda de Koff or I’m probably most well-known as Bulls Eye.

Some time ago I started HackingPassion.com Great fun of course .. But I missed something. There is a lot I would like to write about and make videos about, but that is “not hacking-related”. Therefore this website.

What about then?

Basically, everything a bit Linux, Open Source, “how-to” Make a website, install a server, install and use some different programs your name it. Maybe a little bit about me… Just anything.

Did I mention, sometimes I like to write Python tools.

Also I wanted to make a static website, without any database PHP or anything. The big advantage of this is that it is fast. Blazing fast, without having to go through all databases first. And just simple as possible.


Ethical Hacker, Penetration tester, and some more lol… “You can create art & beauty with a computer and Hacking is not a hobby but a way of life. … is my motto. I like computers, linux, music, dogs, cats, physics, gardening, being outdoors, coffee, and traveling.

I ♥ open source.

Down there that’s me 😃

Jolanda de Koff

And this is my Wolf Dog Babbe, at the time of writing 12 years. She is just amazing ♥


Some Projects

Becoming an Ethical Hacker is simple but not easy, there are so many resources online but lots of them are wrong and outdated, not only that but it is hard to stay up to date even if you already have a background in Cybersecurity. The goal is to educate people and increase awareness by exposing methods used by real black-hat hackers and show how to secure systems from these hackers.

See my GitHub here

  • Shodan Eye

Shodan Eye is a script I made in python. This tool collects all information about all devices that are directly connected to the internet with the specified keywords that you enter. This way you get a complete overview. The types of devices that are indexed can vary enormously: from small desktops, refrigerators to nuclear power plants, and everything in between. You can find everything using “your own” specified keywords.

A collection of search queries for Shodan has attached: “Shodan Dorks … The Internet of Sh*t” The information obtained with this tool can be applied in many areas, a small example: Network security, keep an eye on all devices in your company or at home that is confronted with the internet. Vulnerabilities. And so much more.

  • Blue Eye

Blue Eye is a python Recon Toolkit script. It shows subdomain resolves to the IP addresses, company email addresses and much more ..!

  • Ghost Eye

Ghost Eye - Information Gathering Tool I made in python3. To run Ghost Eye, it only needs a domain or ip. Ghost Eye can work with any Linux distros if they support Python3.

  • Dorks Eye

Dorks Eye Google Hacking Dork Scraping and Searching Script. Dorks Eye is a script I made in python 3. With this tool, you can easily find Google Dorks. Dork Eye collects potentially vulnerable web pages and applications on the Internet or other awesome info that is picked up by Google’s search bots.

  • Google Dork List

Google helps you to find Vulnerable Websites that Indexed in Google Search Results. Here is the latest collection of Google Dorks. A collection of 13.760 Dorks ..! This list is regularly updated !..

  • ByondTheLimits.com

Soon there will be another website called byondthelimits.com . There you can find all the projects I am working on.


Q: How can I support this website?

A: Here are some ways you can donate to the channel and me. Every bit is appreciated.


Within the LBRY application, you can subscribe to “HackingPassion ” and either tip each video episode (using the LBRY cryptocurrency – LBC), or send tips directly to the channel. Each tip is small… but every little bit adds up! 😃

Q: Can my company advertise on / with BullsEye0?

A: It doesn’t hurt to ask! BullsEye0 is picky about what sort of companies can sponsor the work here (you’ll never find credit card, shoe store or pharmaceutical companies sponsoring BullsEye0). If you feel like your company or organization would make sense to partner with BullsEye0, simply drop me an email and strike up a conversation.

Email Me!