IRC has massive numbers of security issues.
1. On most clients it's super easy to get someones IP
2. There have been issues with scripts
3. Issues with buffer override
4. Nickserv passwords are usually sent unencrypted, so if you have a registered name, and reuse that password anywhere you...
Thoughts:
IRC: I'm not saying we should completely get rid of it. I think there will be some people who will refuse to move on to something new. But IRC only does text, it's unstable and is prone to netsplits, doesn't support pictures or animated gifts, doesn't support voice, and is almost 30...
I like Telegram, it can be used on computers. Also you can create an easy link from the webpage, like this club has done. It's also on Android, iOs and Windows phone.