What we know about the alert app hack in Ukraine and Russia
Both Ukraine and Russia say their air raid alert apps were cyber-attacked - Joe Tidy explains what we know so far.
How this summary was made: extractive summary — built from the sources' own reporting. It is drawn only from the reporting of the sources listed below — read the originals for full detail. How we summarize →
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Every article behind this summary — 1 article from 1 outlet
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