Over the weekend, news broke that Linux Mint's servers were compromised, and ISO images were replaced by compromised versions with a backdoor. Everything was made public, and int responded in the only way they could: disclosure, site taken down.
Sadly, it turns out that Linux Mint has somewhat of a bad name when it comes to security.
To conclude, I do not think that the Mint developers deliver professional work. Their distribution is more a crude hack of existing Debian-based distributions. They make fundamental mistakes and put their users at risk, both in the sense of data security as well as licensing issues.
I would therefore highly discourage anyone using Linux Mint until Mint developers have changed their fundamental philosophy and resolved these issues.
Let's hope this issue raises a number of red flags for the Mint team so they can start to take steps to better the situation.