Pentest, bug bounty, scanner, red team.
A pentest buys you coverage of a scope on a schedule. A bug bounty buys you attention from researchers who choose their own targets. A scanner buys you continuous checks against known patterns. They aren’t substitutes, and the reason most programmes run more than one is that each is blind in a different place.
Side by side.
| Vulnerability scan | Bug bounty | Human pentest | Autonomous pentest | |
|---|---|---|---|---|
| You pay for | A licence | Each valid finding | Days of work | Depth and duration |
| Coverage | Whole surface, shallow | Whatever hunters pick | The agreed scope | The agreed scope |
| Cadence | Continuous | Continuous | Quarterly or annual | Continuous or on demand |
| Finds novel bugs | No | Yes | Yes | Yes |
| Business logic | No | Yes | Yes, best here | Limited |
| Output | Findings to triage | Reports as they arrive | One report at the end | Reproductions, continuously |
| Compliance evidence | Partial | Rarely accepted alone | Yes, the usual answer | Supporting evidence |
| Fails when | Nobody reads the output | Nobody looks at your target | The window closes | Judgement is the whole task |
What each one is genuinely best at.
Bug bounties are the only model where people who don’t work for you, and weren’t told where to look, spend real time on your product. That independence is the value, and no automated system reproduces it. The weakness is that attention follows payout: an unglamorous internal service gets ignored no matter how exposed it is.
Human pentesters are still far ahead on business logic. Understanding that a discount code shouldn’t stack, or that this user role shouldn’t see that ledger, requires knowing what the business is for. That’s the weakest area for every agent we’ve built or evaluated, ours included.
Scanners are cheap and belong in CI. The failure is never the scanner, it’s the queue: output nobody triages is output nobody reads.
Autonomous pentesting covers the gap the others leave open, which is time. A quarterly test says nothing about the code you shipped last Tuesday, and as more of that code gets written by AI, the gap between tests is where the risk accumulates.
Common questions.
What is the difference between a pentest and a bug bounty?
A penetration test is scoped, time-boxed and contracted: you pay for a defined number of days against a defined target, and you get a report whether or not anything is found. A bug bounty is open-ended and paid on results: many researchers look whenever they want, and you pay per valid finding. A pentest gives you coverage of a scope. A bounty gives you attention from people who choose what to look at.
Which is better, a pentest or a bug bounty?
They answer different questions, so most mature programmes run both. Use a pentest when you need assurance over a specific system on a schedule, including for compliance. Use a bounty when you have a public attack surface and want continuous pressure on it from people with incentives to look hard. Neither covers what the other misses.
Do bug bounties replace penetration testing for compliance?
Usually not. Frameworks that require regular testing generally expect a scoped engagement with a defined methodology and a report covering the whole scope, which a bounty does not produce. Check the specific control before assuming either satisfies it.
What is the difference between a pentest and a vulnerability assessment?
A vulnerability assessment identifies and ranks known weaknesses, usually with scanning, and stops there. A penetration test attempts to exploit them and chain them together to show real impact. An assessment tells you what looks wrong. A pentest tells you what an attacker could actually do with it.
What is the difference between a pentest and a red team?
A pentest tries to find as many vulnerabilities as it can within a scope, and the defenders usually know it is happening. A red team picks a specific objective, stays quiet, and tests whether your detection and response can catch it. A pentest measures your software. A red team measures your security team.
Where does autonomous pentesting fit?
It runs continuously against a scope you define and returns reproductions rather than a queue of possibilities, which puts it between a scanner and a human pentest on cost and above both on cadence. It is weakest at business-logic flaws and at anything requiring judgement about what matters to your business.