The OWASP Top 10 is the closest thing the software industry has to a shared list of how web applications get broken into. It is published by a respected non-profit, updated every few years, and used by serious engineering teams worldwide. The problem is that it is written for engineers, so most founders never read it.
This is the OWASP Top 10 explained for the person who signs off on the budget, not the person who writes the code. Each item gets a plain analogy and one concrete question you can put to your team. You will not become a security expert, but you will be able to tell whether your team takes these seriously.
1. Broken access control
Imagine a hotel where every room key opens every room. Broken access control is when the application checks that you are logged in but fails to check that you are allowed to see this particular thing. The classic example: changing a number in a web address from your own order to someone else's and seeing their details.
Ask your team: if a logged-in user manually changes an ID in a request, what stops them from reading or editing data that is not theirs?
2. Cryptographic failures
This is about protecting sensitive data, both in transit and at rest. The analogy is sending a confidential letter on a postcard, where anyone handling it can read it. Failures here include not using HTTPS, storing passwords in a reversible form, or leaving customer records unencrypted in a database.
Ask your team: what sensitive data do we store, is it encrypted, and are passwords hashed with a modern algorithm like argon2 or bcrypt?
3. Injection
Injection happens when the application treats user input as instructions instead of as plain data. Picture a clerk who reads aloud whatever is written on a form, including the line that says ignore all previous orders and empty the safe. SQL injection, the most famous form, lets an attacker run their own database commands through an ordinary input box.
Ask your team: are all database queries parameterized, so user input can never be executed as code?
4. Insecure design
Some problems are not bugs in the code but flaws in the plan. If you design a building with no fire exits, no amount of careful construction makes it safe. Insecure design means the security weakness was baked into the architecture before anyone wrote a line of code, often because threats were never discussed.
Ask your team: when we designed this feature, did we explicitly think through how someone might abuse it?
5. Security misconfiguration
This is the unlocked back door of the software world. The code may be sound, but a setting is wrong: a default admin password left in place, a cloud storage bucket open to the public, verbose error messages that reveal internal details to attackers.
Ask your team: have we removed default accounts, locked down our cloud storage, and turned off detailed error messages in production?
6. Vulnerable and outdated components
Modern applications are built on hundreds of third-party libraries. Using an outdated one with a known flaw is like fitting your front door with a lock model that thieves already have a master key for. The flaw is public, the fix exists, and you simply have not applied it.
Ask your team: how do we track known vulnerabilities in our dependencies, and how quickly can we patch a critical one?
7. Identification and authentication failures
This covers everything that goes wrong with proving who someone is. Weak password rules, no protection against endless login guessing, session tokens that never expire. The analogy is a security guard who waves anyone through if they vaguely resemble the photo.
Ask your team: do we lock or slow down repeated failed logins, expire sessions sensibly, and offer multi-factor authentication for sensitive accounts?
8. Software and data integrity failures
This is about trusting things you should verify. It includes pulling in code or updates from sources you have not checked, which is how supply-chain attacks spread. The analogy is accepting a sealed package from a stranger and installing whatever is inside without looking.
Ask your team: do we verify the integrity of the code, updates, and build tools we rely on, rather than trusting them blindly?
9. Security logging and monitoring failures
If a break-in happens and no camera was recording, you may never know it occurred, let alone how. Many breaches go undetected for months simply because nobody was watching the logs. Worse, some applications log nothing useful at all.
Ask your team: do we record important security events, and would we actually notice if someone were attacking us right now?
10. Server-side request forgery (SSRF)
This one is more technical, so here is the simple version. SSRF tricks your own server into making requests on an attacker's behalf, often to internal systems the attacker could never reach directly. Imagine convincing a trusted employee to walk into a restricted room and read out what is inside, because the employee has access you do not.
Ask your team: when our server fetches a web address that a user supplied, how do we stop it from reaching internal systems it should never touch?
What to do with this list
A few practical points tie this together.
- The list is ordered by prevalence and impact, not difficulty. Broken access control sits at the top because it is both common and damaging, and because automated tools rarely catch it. Human review matters.
- You are not auditing your team, you are aligning with them. A good team will recognise every item here and may add risks specific to your industry, such as payment or health-data rules.
- Coverage is never permanent. New libraries, new features, and new staff all reopen old doors. Treat the Top 10 as a recurring review, roughly each release, not a one-time certificate.
If a question produces a clear, specific answer and a sense of where the weak spots still are, that is a healthy sign. Vague reassurance that everything is fine is the answer to worry about.
How Naazware can help
We build web, mobile, and desktop software for clients worldwide, and we treat the OWASP Top 10 as a working part of how we design and review code, not a checklist we glance at before launch. If you would like an honest assessment of an existing application against these risks, or a new product built with them in mind from the first day, we would be glad to talk it through in plain language. Reach out to Naazware whenever you are ready.