I wouldn’t recommend panther or a SIEM for small startups.
D&R is a bit less important for startups beyond some python scripts piping in the boilerplate alerts via API that gsuite, SSO and cloudtrail generate for you. Prowler is going to buy you a lot of overhead that just enabling GuardDuty and SecHub would do for you quickly and pivot back to revenue ops.
What will get you, and secure infra providers wont do for you, and is a blind spot often with startups who focus all on infrasec (like you mapped out), is enterprise sec, which goes beyond phishing.
- are y’all all still on personal laptops? Personal emails anywhere, those laptops have any sort of EDR on them? Personal phones? What’s your SIM swap plan and setup?
- is a pw manager in place? A corporate account vs individual accs? Are you storing secrets on BYOD, any hanging out in envvars or apple notes?
- phishing: I here you, but devs are often the biggest phishing failure stats. And MFA measures in half of it. The other half is you click, doesn’t push you to a login page, just drops something on your endpoint, and no EDR there to tell you it happened.
- is there someone there telling you not to get social engineered by an annoying hackernews account into listing out large chunks in detail of your security stack, which is very closehold data?
Also - going back through six months of comments to find something about Panther is odd