jbayabas - 9:44 pm on Sep 22, 2012 (gmt 0)
The Dos attack can be solved by your host. They can block the offending source/ip for you.
Your number 1 concern is the adult content on your website. When someone or your supposed competitor report your page to google, a real person at google reviews your site. If you receive a 3 day warning to make changes to your site, then the violation is legitimate. Your competitor is actually doing you a favor to clean up your site.
My advise to you is to read the updated TOS in regards to adult content and review/clean up your site from top to bottom. Once your site gets disabled, it's very very hard to get it reinstated again.