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Understanding the Context

Here’s what you need to know. A major hacking tool has leaked online, putting millions of iPhones at risk. Here’s what you need to know. Recently one of my friends told me that there is distinct difference between 'know of something' and 'know about something' expressions.

Key Insights

'know of' is used when you have personal experience with wha... "Know about" vs. "know of" - English Language & Usage Stack Exchange Examples: I know (about) this difficulty/problem. I know (about) Engineering. In the first sentence, it seems to me that "to know" expresses that the speaker experienced the problem/difficulty before while "to know about" only expresses that the speaker has heard or read about it.

Final Thoughts

to know vs to know about - English Language & Usage Stack Exchange Earth is the only planet we know of where life exists. This sentence is from the commentary of Planet Earth. Why it is know of in this sentence? Can it be know about? What’s the difference bet... “know of” vs “know about” - English Language & Usage Stack Exchange Why do you think that He doesn't know him from his schooldays means that he does know him? It would only have that sense if you added something like In fact, he first met him at university.