# DedSec Project — official bilingual website and learning library

> DedSec Project provides a free Android/Termux and Linux toolkit, documentation, programming lessons, troubleshooting, and defensive security education. Public toolkit: https://github.com/dedsec1121fk/DedSec. Ethical and authorized use only.

## Official pages
- [Home / Αρχική](https://ded-sec.space/)
- [Installation / Εγκατάσταση](https://ded-sec.space/Pages/guide-for-installation.html)
- [Tools / Εργαλεία](https://ded-sec.space/Pages/learn-about-the-tools.html)
- [Assistance / Βοήθεια](https://ded-sec.space/Pages/assistance.html)
- [FAQ / Συχνές ερωτήσεις](https://ded-sec.space/Pages/faq.html)
- [TikDev](https://ded-sec.space/TikDev.html)

## Selected practical guides (English and Greek)
- [Runtime lifetimes and data-structure selection](https://ded-sec.space/learn/en/en-1.html)
- [Parsing, grammars and input validation](https://ded-sec.space/learn/en/en-3.html)
- [State machines, invariants and predictable interfaces](https://ded-sec.space/learn/en/en-4.html)
- [SQL transactions, constraints and schema migrations](https://ded-sec.space/learn/en/en-6.html)
- [Concurrency, parallelism and cancellation](https://ded-sec.space/learn/en/en-7.html)
- [Unicode, encodings and multilingual search](https://ded-sec.space/learn/en/en-8.html)
- [HTTP contracts, timeouts and safe retries](https://ded-sec.space/learn/en/en-9.html)
- [CLI programs, Termux and desktop portability](https://ded-sec.space/learn/en/en-13.html)
- [Code review, threat modeling and secure defaults](https://ded-sec.space/learn/en/en-15.html)
- [Release engineering, offline packages and honest validation](https://ded-sec.space/learn/en/en-17.html)
- [Algorithm drills — linear/binary search and frequency maps](https://ded-sec.space/learn/en/en-18.html)
- [01 linear search](https://ded-sec.space/learn/en/en-19.html)
- [02 binary search](https://ded-sec.space/learn/en/en-21.html)
- [03 frequency map](https://ded-sec.space/learn/en/en-23.html)
- [Algorithm drills — two pointers, stacks and sliding windows](https://ded-sec.space/learn/en/en-24.html)
- [04 two pointers](https://ded-sec.space/learn/en/en-25.html)
- [05 stack matching](https://ded-sec.space/learn/en/en-27.html)
- [Breadth-first search](https://ded-sec.space/learn/en/en-28.html)
- [06 bfs](https://ded-sec.space/learn/en/en-29.html)
- [Depth-first search](https://ded-sec.space/learn/en/en-30.html)
- [07 dfs](https://ded-sec.space/learn/en/en-31.html)
- [08 sliding window](https://ded-sec.space/learn/en/en-33.html)
- [Algorithm drills — sorting, dynamic programming and prefix sums](https://ded-sec.space/learn/en/en-34.html)
- [09 sorting](https://ded-sec.space/learn/en/en-35.html)
- [Dijkstra shortest paths](https://ded-sec.space/learn/en/en-36.html)
- [10 dijkstra](https://ded-sec.space/learn/en/en-37.html)
- [Topological sort](https://ded-sec.space/learn/en/en-38.html)
- [11 topological sort](https://ded-sec.space/learn/en/en-39.html)
- [Ασκήσεις αλγορίθμων: γραμμική/δυαδική αναζήτηση και συχνότητες](https://ded-sec.space/learn/el/el-1.html)
- [01 linear search](https://ded-sec.space/learn/el/el-2.html)
- [02 binary search](https://ded-sec.space/learn/el/el-4.html)
- [03 frequency map](https://ded-sec.space/learn/el/el-6.html)
- [Ασκήσεις αλγορίθμων: δύο δείκτες, στοίβες και κυλιόμενα παράθυρα](https://ded-sec.space/learn/el/el-7.html)
- [04 two pointers](https://ded-sec.space/learn/el/el-8.html)
- [05 stack matching](https://ded-sec.space/learn/el/el-10.html)
- [Αναζήτηση κατά πλάτος](https://ded-sec.space/learn/el/el-11.html)
- [06 bfs](https://ded-sec.space/learn/el/el-12.html)
- [Αναζήτηση κατά βάθος](https://ded-sec.space/learn/el/el-13.html)
- [07 dfs](https://ded-sec.space/learn/el/el-14.html)
- [08 sliding window](https://ded-sec.space/learn/el/el-16.html)
- [Ασκήσεις αλγορίθμων: ταξινόμηση, δυναμικός προγραμματισμός, αθροίσματα](https://ded-sec.space/learn/el/el-17.html)
- [09 sorting](https://ded-sec.space/learn/el/el-18.html)
- [Συντομότερες διαδρομές Dijkstra](https://ded-sec.space/learn/el/el-19.html)
- [10 dijkstra](https://ded-sec.space/learn/el/el-20.html)
- [Τοπολογική ταξινόμηση](https://ded-sec.space/learn/el/el-21.html)
- [11 topological sort](https://ded-sec.space/learn/el/el-22.html)
- [12 fibonacci dp](https://ded-sec.space/learn/el/el-24.html)
- [13 prefix sums](https://ded-sec.space/learn/el/el-26.html)
- [14 safe text normalization](https://ded-sec.space/learn/el/el-28.html)
- [Επεξεργασία παρτίδων](https://ded-sec.space/learn/el/el-29.html)
- [15 rate limited batch](https://ded-sec.space/learn/el/el-30.html)
- [Παραδείγματα σφαλμάτων: Python και JavaScript](https://ded-sec.space/learn/el/el-31.html)
- [Διόρθωση συμβάντων UI, SQL queries και διαδρομών shell](https://ded-sec.space/learn/el/el-35.html)
- [Αποτυχίες και ιδιοκτησία μνήμης σε κώδικα συστημάτων](https://ded-sec.space/learn/el/el-38.html)
- [Go: αγνοημένο σφάλμα](https://ded-sec.space/learn/el/el-41.html)
- [Παραδείγματα σφαλμάτων: Rust, PHP, TypeScript και Python](https://ded-sec.space/learn/el/el-42.html)

## Full index
- [Full website and lesson content](https://ded-sec.space/llms-full.txt)
- [XML sitemap](https://ded-sec.space/sitemap.xml)

## Notes
Instructional articles are maintained in paired English/Greek source files. Verify version-specific commands, APIs and permissions against current documentation; avoid implying that all platform-specific examples were executed.