There are dozens, even hundreds, that are worthwhile. IT is such a wide field that it is impossible to enumerate them all. It also depends on your interests and expertise.
At a minimum, you should be aware of Fosspatents (open source patent issues in IT)
Krebs on Security for security related stuff.
AndroidPolice and AndroidCentral for Android things
TorrentFreak for news about file sharing software and issues
ArsTechnica for all sorts of tech and scientific stuff.
But I am just scratching the surface.