Digital fortress
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When the most powerful intelligence organization neglects individual freedom in today's information space, it's up to hackers to defend it! One of them created a virus that would crash a supercomputer containing a dossier on every internet user. Will mathematician Suzanne Fletcher be able to neutralize it to prevent the balance of power from being upset? How to extract a secret antivirus code from a hacker's golden ring lost somewhere in Spain?
The plot unfolds at breakneck speed, with puzzles and surprises at every turn, so even the most experienced readers will question their own assumptions.















![[1] Harry Potter and the Philosopher's Stone. Large Illustrated Edition](http://kazka.it/cdn/shop/products/20220824_020_600x.progressive.jpg?v=1711018840)



