Yeah, noticed it last week when I wanted to check some archived stuff. It's sad that such big websites with so much data is so vulnerable in terms of security.
I wouldn't call the Internet Archive vulnerable in terms of security - in fact it has a lot of robust security features in place to stop hacks (even before this assault began).
However, almost any website can fall prey to classic DDoS scripts and botnets. The IA is no exception. It is really only big tech companies who have loads and loads of reverse proxies and load balancing who can withstand such an attack.
