external security audit and incident response providers/expert

[froese]

Who are the best external providers and/or experts providing the following services:

1. Security audits (including GDPR-related security audits & inspections)
2. Cybersecurity incident (including personal data breaches) response

[zrhbert]

I guess that depends a bit on:
- where are you looking for these services (e.g. country)
- are you looking more for a post-incident technical investigation or for legal counseling in case of breach?