Penetration Testing by Specialists Who Attempt to Break In
Manual testing where a specialist deliberately tries to exploit weaknesses in your systems, the way a determined attacker would, inside a scope agreed in writing. GullySystem engages the specialists a scope calls for and delivers proof, not a list.
What Penetration Testing Actually Involves
Rather than only listing what might be wrong, a specialist chains individual weaknesses together and attempts to actually do something with them — reach data that should be off limits, escalate a low-privilege account, or move from one system to another — strictly within rules agreed before testing starts.
Why a Scan Report Is Not Enough
- A scan tells you a service is outdated; it does not tell you what someone could actually do once inside it
- An enterprise customer's contract or a bank's onboarding process specifically requires manual penetration testing, not an automated report
- A board or investor wants independent proof that a serious attempt was made, and what it did or did not achieve
What a Specialist Does That a Scanner Cannot
Chains Findings Together
Combines several individually minor issues into a path that reaches something that actually matters.
Attempts Real Exploitation
Tries to prove a weakness is usable rather than only theoretical, within the limits you have set.
Adapts Mid-Test
Changes approach based on what your specific systems and defences actually do, instead of following a fixed script.
Documents Proof
Records exactly how each successful attempt was carried out, so it can be reproduced and later retested.
When You Specifically Need a Qualified Specialist
- A client, insurer or regulator names “penetration testing” or a specific tester qualification in a contract or questionnaire
- The systems in scope are high-value enough that proof of exploitability, not just a list of issues, is worth paying for
- A previous vulnerability assessment flagged items serious enough to warrant confirming whether they are actually exploitable
What You Receive at the End
A narrative report describing what was attempted, what succeeded, and the exact steps behind each successful attempt, alongside evidence you can hand to a customer, auditor or your own developers. A retest of the specific findings, run once fixes are in, is part of the engagement rather than a separate purchase.
Frequently asked questions
How is this different from a vulnerability assessment?
A vulnerability assessment lists what could be a problem across a wide set of systems. Penetration testing selects specific systems or findings and tries to actually exploit them by hand, proving what a real attacker could achieve rather than only what might be wrong.
Who are the specialists doing the work?
Testers engaged specifically for their hands-on exploitation experience. For engagements where a client or auditor requires testing by an independently credentialed specialist, that requirement is confirmed during scoping and the right person is brought onto the engagement before it starts.
What drives the cost of a penetration test?
How many systems are in scope, how many user roles or access levels each one has, and how deep the testing needs to go — a test confined to one application costs less to run properly than one spanning several applications, APIs and cloud infrastructure together.
What determines how long the engagement runs?
Agreement on the rules of engagement, access to test accounts and environments, and the size of what is in scope. A live system tested with limits, outside business hours, typically takes longer to work through than the same test run against a staging copy.
Will this disrupt our live systems or customers?
That is decided in the rules of engagement before testing starts, not mid-test. Destructive or disruptive actions are avoided or confirmed with your named contact first, and testing on a live system is throttled rather than run at full intensity.
Is a retest included?
Yes. The specific findings from the test are retested once you have fixed them, using the same steps as the original attempt, and the result is recorded so closure is a matter of evidence rather than an assurance.
What do you need from us before testing begins?
Written authorisation for every system in scope, a test window that fits your business, an escalation contact reachable throughout, and test accounts for each role where the scope includes application testing rather than only infrastructure.
Tell us what you need.
Send a short brief and one of our engineers will come back to you — usually the same day.
- No obligation
- We reply the same working day
- Your details stay private