Choosing the ‘Right’ Bug Bounty Program
By: Emanuel Beni Harijanto
Tags: Bug Bounty, Security, Bugs, Vulnerability, Crowdsourcing

For the first 1.5 months of my bug bounty journey, I decided to participate in one of the most well-known programs on HackerOne, GlassDoor. Based on the policy page, Glassdoor rewards security researchers with an above-average bounty while having a good average response time. After a full 1.5 months, I was only able to find 1 HTML Injection Vulnerability, and you guessed it right, duplicate. At this point, I felt really discouraged and began questioning myself. There could only be a few scenarios of why this is happening.

I haven’t learned enough vulnerability classes to find one on Glassdoor. Many researchers are participating/participated in the program, therefore making it very competitive. The program might not be the right fit for me (Tech stack, scopes and etc.).

At that time, I would say that the last 2 scenarios described my ‘failure’ the most. I began changing my methodology as well as being very selective when selecting a bug bounty program. I started considering all of the metrics given by HackerOne to researchers such as; Program Launched Date, Scopes, Resolved Reports and etc., hence the consideration factors listed above.

Narrow Your Competition by Checking Service Location

Moving to our first consideration, Service Location. As we all know, some companies offer services only to a specific region. As an example, companies such as Grab is only available for customers who are living in Indonesia, Singapore, Myanmar, Thailand, Cambodia, and Vietnam, meaning people who are living within these 8 countries would have easier and complete access to the resources and services Grab provides, therefore increasing the chance of finding valid security vulnerabilities. In terms of competition, you will most likely be competing with fewer people than companies that provide services to people around the world. I have also gone to the extreme of participating in companies that are not listed on the HackerOne Programs, meaning companies that are running their own bug bounty program locally. Use these companies as your training ground and knowledge check.

Program Launch Date is another metric that I would closely consider. The newer the program the more undiscovered security vulnerabilities. The later the program the more discovered vulnerabilities. Although it is desirable to hack on new programs, you should be mentally ready to receive duplicates. This is a predictable outcome since many researchers would be participating in the program too. I personally enjoy hacking on programs that have been on the platform for around 4–6 months. At this point, multiple reports must’ve been disclosed, which is another factor to look at. It is really advantageous for researchers to read these reports. Disclosed reports will allow researchers to gain internal knowledge such as technology stack, executable payloads, and etc. unless the company runs a ‘semi-private’ program, reports are redacted entirely.

Lastly, I would urge every researcher to consider the domain and vulnerability scope of the program. If we are going for a horizontal approach, meaning we are searching for a specific vulnerability on different companies, be entirely sure that it is part of the vulnerability scope. If we are going for a vertical approach, then more domains/subdomains are favorable, therefore check the domain scope of the program. Having both would be the most optimal scenario since it will widen the attack surface.

Just Do It!

In conclusion, the first step to finding vulnerabilities is to just do it, Nike. You will find duplicate or informative reports, but at least you are on the same page as other researchers. This will also serve as foundational building blocks for your bug bounty career ahead as it will enrich your knowledge regarding different vulnerabilities on different technologies. When it comes down to execution, think out of the box, read a lot of writeups, and study from different books. I would recommend watching bug bounty videos on Youtube to motivate yourself. Namasec, Stok, and The Cyber Mentor are channels that give insightful information regarding infosec. Thanks for lending your time!