This morning it appears a massive Distributed Denial of Service attack targeting DNS host Dyn has knocked a big chunk of the Internet offline Friday morning.

The Domain Name System (DNS) converts human-readable URLs (like “pcworld.com”) to their underlying numeric IP addresses. Dyn hasn’t confirmed that the outages and its DDoS attack are related, but given that these sites keep going down every time Dyn gets slammed, it seems highly likely.

Hacker News users report the following sites are down: ...