CBCNews.ca appears to be affected Thursday by the hacking.
Some users trying to access the CBC website reported seeing a pop-up message reading: "You've been hacked by the Syrian Electronic Army (SEA)."
The Telegraph reported that part of its website run by a third party was compromised earlier Thursday.
"We've removed the component," the Telegraph tweeted. "No Telegraph user data was affected."
The Independent reported that it was also affected by the apparent hacking, as well as the Chicago Tribune, CNBC, PC World and Forbes — citing social media.