The Santiago Chamber of Commerce is a non-profit union institution that since 1919 has brought together more than 2,000 associated companies, representative of the most relevant economic sectors in Chile. Since 2015, we have preventively carried out an annual pentesting program aimed at reducing security breaches, which to date have been reduced by 70%, auditing more than 40 sites or IPs quarterly. Likewise, we carry out diagnoses of the perimeter security policies (firewalls) indicating to the external service provider the corrections to be made both in the infrastructure and in the policy and content methodology. In conclusion, for the CCS we are the external security auditor who ensures that its internal policies are framed in good practices and eliminate the security breaches of the institution.