How so? Presumably most pen testers are working in good faith. But, if there is a malicious actor in their midst, that individual would not disclose any vulnerabilities they intend to exploit, no. What would be the point? That's just a really good way to get caught.
> Then you talk about "discovered and revealed vulnerabilities".
Yes, that's right. While it is theoretically possible for all your pen testers to be working together maliciously, if you are careful in your employment practices you can make this highly unlikely.
As such, if your data shows that 100% of all known vulnerabilities were independently discovered by multiple testers, then there is reasonable confidence that any malicious actor's failure to disclose a vulnerability will still be reported by someone else.
But if that figure is less than 100%, and especially if it is considerably less than 100%, then there is much more doubt cast on another pen tester in your organization's ability to find the same vulnerability. Here you have a problem.
1. You get to test the flaws in an environment where nobody will raise an eyebrow. If you go straight for the production system, it is likely your early attempts will visibly show up in the logs.
2. You get paid to carry out malicious deeds. That's a double win.
It would be kind of silly not to.
The second two sentences read like excellent reasons why you should take the job (even if they are just a repeat what I already said in different words).
I must have missed something.
You get well paid and it's legal.
The reality is that you don't get paid well if the data is worthless. You only get paid well when the data is worth orders of magnitude more than what you're being offered. If you are inclined to break that law, that's a pretty nice carrot dangling there.
If you are so inclined, why wouldn't you take the job and report the not so crafty exploits to bring in the sweet, sweet paycheque and use the really juicy exploit to also go after the even sweeter data? It's a total win-win situation...
...unless you get caught, but if you are so inclined that's not exactly on your radar.
[1] Okay, regulation, but the need for such regulation is still in question.