- Even if you use the broader definition to include nationality, in this case, the "hackers" are physically located in the geopolitical boundaries of India
- Nearly every major country with a large enough population has people in whitehat/blackhat infosec professions. It is an incredible reach to suggest that newspapers should not identify the national origin of these individuals because of what some racist readers might start to believe or become biased towards, by drawing non-existent lines to patterns that don't exist except in their own bubbles. Editorial standards and responsibility should not be driven by the weakest minds.
Popular dictionaries (Webster/Oxford) don't include national origin
The usage of the word "racism" to include xenophobia is common enough in a casual context that I cannot believe that you are simply not aware of that usage. By choosing to argue over the semantics of the word racism over usage you probably already are familiar with, you are diverting attention from what really matters here: that said racism or xenophobia exists and negatively affects real human beings.
(Not that any xenophobia is particularly better than any other, but it’s difficult to talk to people when they use broader meanings for words you thought meant very specific thing. See also terrorism vs insurgency, genocide vs occupation, etc.)
If anything, attempts to redefine racism as only American variant where it is all about shades of color is redefinition.
And obviously, ethnicity and geography goes with races.
If I walk into a friend's business, and say "woah, I did not know you hired a <derogative racist term>, they're all stupid you should fire him" and the friend immediately goes "ooh I forgot to be racist, yea I'll fire them immediately" then their firing would absolutely be racist despite the person being fired not witnessing the racist logic that causes it.
Equally with voter ID laws, they're not racist because they put mean racist message onto the ID cards or something, and whether or not victims of that sort of racist politics notice doesn't mean racism isn't involved. If somebody says "I don't think we need voter IDs, but in my district only the <some race of people> don't have photo IDs and they would all want to vote for my opponent, so let's require ID to vote!" then those people have had a racist and very unfair thing happen against them, regardless of whether they are "thinking of racism".
edit: and as a slightly easier example, if I edited a newspaper and decided that for every negative story about one skin colour would get front page billing, and every negative story about my own skin colour would get binned rather than published, then all my paper's readers might be able to look at every single article without seeing any racism in them - but their not knowing doesn't change that my theoretical editing was racist.