GoDaddy Software Bug
“GoDaddy has revoked 8850 SSL certificates after the hosting service discovered a bug affecting domain validation.
The bug was born in July 2016, when according to a blogpost by GoDaddy, the company ‘GoDaddy inadvertently introduced the bug during a routine code change intended to improve our certificate issuance process’. The bug would cause the domain validation process to fail in certain cases. The problem affected over 6000 customers.”
SC Media UK – https://is.gd/C3Ml0V