I would like to know if there are any Free certifications related to writing secure code that myself and our team of .NET/AngularJS web-developers take up,
So that we can write secure code and also assure our customers that the developers of their app are 'Certified'
I am mainly looking for Free (If none Payed is also fine) internet based Certification .
I did google around for the same (and know about OWASP, isc2.org, sans.org) but couldn't tell which one is free, or industry best.
Any help is appreciated