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Cybersecurity

Beginner 4 weeks $222.60 CodingDigital

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Cybersecurity

Beginner · 4 weeks

Paid course
Defensive Cybersecurity: From First Steps to Expert
Proactive digital defense protects everything you build in school, work, and business. This training guides you through identifying system vulnerabilities, stopping malicious software, safeguarding private networks, and setting up unbreakable firewalls.

It is perfect for ambitious minds ready to start without any prior experience, gain advanced technical capabilities, and operate with complete confidence against modern threats.
206 lessons4 weeks$222.60

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206 steps
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  1. 1How to Use This CourseLesson + quiz
  2. 2Tracks 1–3 are the core. Track 4 amplifies everything. Track 5 is for anyone whoLesson + quiz
  3. 32. Never type real secrets into shared tools. When a session says to use aLesson + quiz
  4. 4free editions cover home needs), email (Week 10 — free providers used; paidLesson + quiz
  5. 5Week 1 · What Is Cybersecurity & Why You Are a TargetLesson + quiz
  6. 6The attacker’s playbook has four moves, and everything in this course is aLesson + quiz
  7. 7Step 3 — The work and social layerLesson + quiz
  8. 8Read the results the right way. A hit does not mean “I am hacked.” It meansLesson + quiz
  9. 9Week 2 · Passwords That Actually ProtectLesson + quiz
  10. 10The number that matters is length, not cleverness. Each extra character addsLesson + quiz
  11. 11Guided practical — build your master passphrase (20 minutes)Lesson + quiz
  12. 12WORDS YOU’LL MEET TODAYLesson + quiz
  13. 13Before next time: install nothing yet; just keep the passphrase out of any note.Lesson + quiz
  14. 14Week 3 · Password Managers — One Vault to Rule Them AllLesson + quiz
  15. 15passphrase, lose the vault. That is why this week also sets an offline backup —Lesson + quiz
  16. 16Once both are logged in, they sync automatically. Test: create a junk entry onLesson + quiz
  17. 17random words). The vault is the only place the “answer” lives. From now on, noLesson + quiz
  18. 18Three takeawaysLesson + quiz
  19. 19Week 4 · Two-Factor Authentication & Passkeys — The Second LockLesson + quiz
  20. 202FA = know + have. You still type the password (know), then prove you hold theLesson + quiz
  21. 21phone/PC asks for face or fingerprint > done. – Authenticator app > scan theLesson + quiz
  22. 22WORDS YOU’LL MEET TODAYLesson + quiz
  23. 233. Backup codes are the airbag. You set them while calm; you use them inLesson + quiz
  24. 24Week 5 · Phishing, Scams & Social Engineering — The Con, UpgradedLesson + quiz
  25. 25The tell is the emotional spike. Legitimate institutions do not create panic —Lesson + quiz
  26. 26Message 1 — the WhatsApp “card” scamLesson + quiz
  27. 27Message 3 — the job / investment offerLesson + quiz
  28. 28Your turn — build your freeze frame (7 minutes)Lesson + quiz
  29. 29Before next time: this week’s freeze frame is the filter for Week 6 — safeLesson + quiz
  30. 30Week 6 · Safe Browsing & Downloads — Where You Walk MattersLesson + quiz
  31. 313. The phone asks, “Install unknown apps?” — a scary-sounding setting that isLesson + quiz
  32. 32If any app fails the check (wrong publisher, tiny install count, installed from aLesson + quiz
  33. 33WORDS YOU’LL MEET TODAYLesson + quiz
  34. 34Before next time: the update habit you just set is half of Week 7 — deviceLesson + quiz
  35. 35Week 7 · Device Hygiene — Updates, Locks & Lost DevicesLesson + quiz
  36. 36guess. Six digits (1 million) is the practical floor; a pattern is worse than 4Lesson + quiz
  37. 37• iPhone: Settings > Face ID & Passcode > keep the 6-digit passcode (theLesson + quiz
  38. 3848 hours (or confirmed stolen) > erase. Write this tree in week-07 todayLesson + quiz
  39. 39Three takeawaysLesson + quiz
  40. 40Week 8 · Backups — The Undo Button for DisastersLesson + quiz
  41. 41• with 1 copy off-site (the cloud is off-site; the stick can live at a trustedLesson + quiz
  42. 42Step 2 — The cloud copyLesson + quiz
  43. 43PRO TIP — THE OLD PHONE IS A LEGITIMATE BACKUP DEVICELesson + quiz
  44. 44Your turn (7 minutes)Lesson + quiz
  45. 45Week 9 · GATE PROJECT — Your Personal Security AuditLesson + quiz
  46. 46Guided practical — run the audit (25 minutes)Lesson + quiz
  47. 47Section C — The intercept layer (devices, network reach) — Weeks 6, 7Lesson + quiz
  48. 48dies, the data is gone. Fix: restore one file from Drive this week. Verified: the fileLesson + quiz
  49. 49Three takeawaysLesson + quiz
  50. 50Week 10 · Email — The Master Key to EverythingLesson + quiz
  51. 51controlled email. The account was never “hacked” directly. It was re-keyedLesson + quiz
  52. 52Step 4 — App passwords, understoodLesson + quiz
  53. 53STOP — THE “RECOVERY SUPPORT” CONLesson + quiz
  54. 54Three takeawaysLesson + quiz
  55. 55Week 11 · Money Online — Bank Apps, Mobile Money & Card PaymentsLesson + quiz
  56. 56The OTP, restated for money specifically: the code that appears in yourLesson + quiz
  57. 57Step 2 — The limits (the damage ceiling)Lesson + quiz
  58. 58screen could be seen. – Transaction SMS alerts on (the wallet’s own, officialLesson + quiz
  59. 59Three takeawaysLesson + quiz
  60. 60Week 12 · SIM Swap & Phone-Number AttacksLesson + quiz
  61. 612. The social-engineering call or walk-in: “I lost my phone, I need a new SIM,Lesson + quiz
  62. 62Step 2 — Ask for swap protection (the second layer)Lesson + quiz
  63. 63PRO TIP — THE “CALL MYSELF” TRAPLesson + quiz
  64. 64Three takeawaysLesson + quiz
  65. 65Week 13 · Messaging, Social Media & Your ReputationLesson + quiz
  66. 66The two attack surfaces, named:Lesson + quiz
  67. 67Step 2 — The recon-minimal profile trimLesson + quiz
  68. 68Share it, then run a 5-minute drill: one family member (with permission) sendsLesson + quiz
  69. 69Your turn (7 minutes)Lesson + quiz
  70. 70Before next time: the household’s people are now defended. Next week is theLesson + quiz
  71. 71Week 14 · Your Home Router & Wi-Fi — Own the GatewayLesson + quiz
  72. 72— and the default is usually admin / admin or admin / password . Anyone onLesson + quiz
  73. 73secret. (Do not name it after your name/phone; the name is public advertising.) –Lesson + quiz
  74. 74WORDS YOU’LL MEET TODAYLesson + quiz
  75. 75Three takeawaysLesson + quiz
  76. 76Week 15 · Public Wi-Fi, Hotspots & VPNs — The Honest GuideLesson + quiz
  77. 776) is encrypted and safe from this; any service that still uses plain HTTPLesson + quiz
  78. 78• The honest setting: you do not need the VPN on for everything. Turn it onLesson + quiz
  79. 79tracking protection on (the browser’s built-in, free privacy layer — reduces theLesson + quiz
  80. 80deliberately — confirm the network name, note whether the site you open isLesson + quiz
  81. 81Week 16 · Malware & Antivirus — The Germs of the InternetLesson + quiz
  82. 82The honest antivirus picture for 2026: – Windows 10/11 ships with WindowsLesson + quiz
  83. 83Guided practical — the AV confirmation + the response planLesson + quiz
  84. 84Page 84Lesson + quiz
  85. 85STOP — THE “FAKE ANTIVIRUS” IS A SCAM, NOT A VIRUS FIXLesson + quiz
  86. 86Three takeawaysLesson + quiz
  87. 87Week 17 · Privacy & Your Data Footprint — Modern Privacy Law in PracticeLesson + quiz
  88. 88an inference directly — you shrink it by shrinking the inputs (the direct layer)Lesson + quiz
  89. 89The two rows to interrogate hardest: the location row (which apps haveLesson + quiz
  90. 90Step 3 — The three free reductions (the practical privacy)Lesson + quiz
  91. 91PRO TIP — THE “FREE APP IS FUNDED BY YOUR DATA” RULELesson + quiz
  92. 92Three takeawaysLesson + quiz
  93. 93Week 18 · GATE PROJECT — The Secure-the-Household ProjectLesson + quiz
  94. 943. The priority fixes — the top three risks, each with the professional four-lineLesson + quiz
  95. 95The honest column is “Current defence.” Where you do not know the partner’sLesson + quiz
  96. 96The ranking is the analysis. The two 9s (the partner’s unprotected line; theLesson + quiz
  97. 97Step 4 — The 30-day review (the close)Lesson + quiz
  98. 98The 30-day review is what makes the case file a system rather than a one-off. ItLesson + quiz
  99. 99Three takeawaysLesson + quiz
  100. 100Week 19 · How Attacks Actually Work — The Lifecycle in Plain WordsLesson + quiz
  101. 101The plain-Lesson + quiz
  102. 1022. An incident is a sequence with a timestamp. “Something went wrong” is notLesson + quiz
  103. 103Walk it, stage by stage — and at each stage, name the tell, the stage, and theLesson + quiz
  104. 104In an incident, saying “we are at stage 4 — movement — the email is re-keyingLesson + quiz
  105. 105highest). Log it stage by stage, with timestamps and the one-line stage names.Lesson + quiz
  106. 1062. The TLS certificate (who vouches for the site). The padlock means “theLesson + quiz
  107. 107= stop, do not proceed. 3. Check one header (below) — HSTS present? The realLesson + quiz
  108. 108Step 3 — The security headers, read for free (the browser’s dev tools)Lesson + quiz
  109. 109PRO TIP — THE “TYPED URL, NOT CLICKED” RULE, SHARPENEDLesson + quiz
  110. 110Your turn (7 minutes)Lesson + quiz
  111. 111Week 21 · Security for Small Business — The Starter Kit MindsetLesson + quiz
  112. 112The starter-kit mindset, in three rules: 1. Scope first, then defend. You cannotLesson + quiz
  113. 113rule), run the scope in week-21 . You are not auditing their internals; you areLesson + quiz
  114. 114The SMELesson + quiz
  115. 115That paragraph is the Week 26 “first paying clients” sample — the scope andLesson + quiz
  116. 116Three takeawaysLesson + quiz
  117. 117Week 22 · E-Commerce, Payments & Staff — Guarding the Shop That SellsLesson + quiz
  118. 118(an attacker who gets into the store’s CMS injects a script that harvests theLesson + quiz
  119. 119Guided practical — the e-commerce sweep + the staff rules (25Lesson + quiz
  120. 120Step 3 — The five staff rules (the SME’s security basics)Lesson + quiz
  121. 121The drill (5 minutes, once a month): the owner sends one test “boss transfer” orLesson + quiz
  122. 122STOP — THE “CARD BY WHATSAPP” FLOW IS A LIABILITY, NOT A CONVENIENCELesson + quiz
  123. 123Three takeawaysLesson + quiz
  124. 124Week 23 · Incident Response — The First 60 MinutesLesson + quiz
  125. 125The clock (the first 60 minutes, the money-incident version):Lesson + quiz
  126. 126The timeline log (the artefact that makes it professional):Lesson + quiz
  127. 127The last line is the professional’s habit — every incident ends with what failed,Lesson + quiz
  128. 128saying the stage name forces the decision), and log every action as it happens,Lesson + quiz
  129. 129Step 3 — The “what failed” honesty (the improvement loop)Lesson + quiz
  130. 130Your turn (7 minutes)Lesson + quiz
  131. 131Week 24 · Recovery & Resilience — Getting Back Up, ProperlyLesson + quiz
  132. 132email in 1 hour (it re-keys everything).” The RTO is what makes the recoveryLesson + quiz
  133. 133The “minimum to stay open” (the business’s graceful-degradation list): WhenLesson + quiz
  134. 134The RTO is the number you rehearse to. The 4-hour wallet RTO means the re-Lesson + quiz
  135. 135Step 3 — The resilience habits, scheduled (the 30-day system)Lesson + quiz
  136. 136PRO TIP — THE PAPER BOOK IS THE ULTIMATE BACKUPLesson + quiz
  137. 137Three takeawaysLesson + quiz
  138. 138Week 25 · The Legal Lab — Attacker Skills on Authorised GroundsLesson + quiz
  139. 139it is the ground (whose system, whose data, with whose permission) and theLesson + quiz
  140. 140theft to cover the private sector. The practical effect for you: you are now theLesson + quiz
  141. 141Sign it, date it, file it in week-25 . It is the document that makes the rest of thisLesson + quiz
  142. 142already scanned in Week 6) > read the detection count (how many of the ~70Lesson + quiz
  143. 143Skill 3 — The vulnerable-app break (OWASP Juice Shop)Lesson + quiz
  144. 144> start the beginner room > solve the first challenge (it is a reading challenge —Lesson + quiz
  145. 145encoding/transforming data (Base64, URL-decode,Lesson + quiz
  146. 146Before next time: the skills are real and the law is the boundary. Next week isLesson + quiz
  147. 147Week 26 · Careers, Certifications & Your First Paying ClientsLesson + quiz
  148. 14821–24 — the scope, the starter kit, the IR card, the review calendar. You are notLesson + quiz
  149. 149Guided practical — the portfolio + the routes + the first offer (25Lesson + quiz
  150. 150Step 2 — The free study routes (toward the badge, without the price tag)Lesson + quiz
  151. 151Step 3 — The first-offer letter (the one-paragraph offer, made local)Lesson + quiz
  152. 152offer to show the files). That is the Week 21 “offer,” turned into a local,Lesson + quiz
  153. 153the first-5-minutes plan), which is exactly the work of Weeks 21–24. TheLesson + quiz
  154. 154Week 27 · CAPSTONE GATE — The Small-Business Security KitLesson + quiz
  155. 155The policy page (Page 5) is the only new content — the standing written rulesLesson + quiz
  156. 156The delivery (the handover) is the close of the Kit — the owner is not handed aLesson + quiz
  157. 157The capstone is the certificate: the Kit, delivered, is the proof that you can takeLesson + quiz
  158. 158Step 2 — The one-page summary (the cover of the Kit)Lesson + quiz
  159. 159WORDS YOU’LL MEET TODAYLesson + quiz
  160. 160Three takeawaysLesson + quiz
  161. 161AI Session 1 · AI as Your Security Tutor — Prompting, with the Iron RuleLesson + quiz
  162. 162service does with the input, and the cost of one leak (a full card number, aLesson + quiz
  163. 163Step 2 — The first four-part brief (a real security task, redacted)Lesson + quiz
  164. 164Then, the verify step (the tutor-vs-oracle rule): take the AI’s five items andLesson + quiz
  165. 165Your turn (7 minutes)Lesson + quiz
  166. 166AI Session 2 · AI as Scam Detective — Analysing Suspect Messages SafelyLesson + quiz
  167. 167values for placeholders (the redaction habit, AI-1) before you paste: the realLesson + quiz
  168. 168The redaction is the ground rule (Week 1) applied to the AI (the Iron Rule): theLesson + quiz
  169. 169Message 2 (the “family” WhatsApp) — the AI should find: – Sender: a familyLesson + quiz
  170. 170defence targets the structure of the con, not its writing quality. That is the 2026Lesson + quiz
  171. 171AI Session 3 · The Professional AI Workflow — Audits, Policies & Drills, DeclaredLesson + quiz
  172. 172drill script’s steps, the audit’s checklist scaffolding. It is not the author of theLesson + quiz
  173. 173Guided practical — the professional AI workflow (25 minutes)Lesson + quiz
  174. 174The review step (the verify, the Weeks 1–27 as the answer key): take the AI’sLesson + quiz
  175. 175Step 3 — The two-sentence disclosure, stampedLesson + quiz
  176. 176Three takeawaysLesson + quiz
  177. 177Lab Session 1 · The Home Lab — VirtualBox, Kali & Your Own Isolated NetworkLesson + quiz
  178. 178The plain-words partLesson + quiz
  179. 179Guided practical — build the lab (the ~60-minute build, in fourLesson + quiz
  180. 180The seal, in one line: the lab is a sealed room. The vulnerable machines andLesson + quiz
  181. 181Step 4 — The first capture (Wireshark — seeing the traffic)Lesson + quiz
  182. 182STOP — THE SEAL IS THE WHOLE GAMELesson + quiz
  183. 183unencrypted traffic). The defender’s habit: do the attacker’s first move first,Lesson + quiz
  184. 184Lab Session 2 · Web Apps That Break — Juice Shop, DVWA & the OWASP Top 10:2025Lesson + quiz
  185. 185The 2025 list (the current edition — the 2021 edition is outdated; use the 2025Lesson + quiz
  186. 186most common real risk). The point of the list is not the names — it is the habit:Lesson + quiz
  187. 187Step 2 — Break three intentional vulns, by hand (the manual attacker’sLesson + quiz
  188. 188check who is asking). Name it: A01. (This is the “admin page a user should notLesson + quiz
  189. 189Step 4 — Map to the OWASP Top 10:2025 (the why, the free reading)Lesson + quiz
  190. 190PRO TIP — THE “LOCALHOST IS THE SEALED ROOM”Lesson + quiz
  191. 191SSRF is folded into A01; A02 misconfiguration is up to #2). The habit: breakLesson + quiz
  192. 192Lab Session 3 · Vulnerable Machines & CTF — Metasploitable, TryHackMe & the Flag HabitLesson + quiz
  193. 193The plain-words partLesson + quiz
  194. 194step). – VulnHub ( vulnhub.com , free) — the downloadable vulnerable VMs (theLesson + quiz
  195. 195Step 2 — One full exploit chain (Metasploit, the free framework, on Kali)Lesson + quiz
  196. 196prompt on the target). This is the full exploit chain, end to end — the attackLesson + quiz
  197. 197Step 3 — The flag habit (the free CTF, the lab notebook, the one-line note)Lesson + quiz
  198. 198Three takeawaysLesson + quiz
  199. 199Lab Session 4 · The Blue-Team Corner — Real Logs, Real Alerts, a Free SIEMLesson + quiz
  200. 200Guided practical — Wazuh, the alerts, the readout (30 minutes)Lesson + quiz
  201. 201Step 3 — Watch the alerts fire (the real alerts, on the real activity)Lesson + quiz
  202. 202Step 4 — The first incident readout (the defender’s artefact, the Gym’sLesson + quiz
  203. 203The readout is the Gym’s capstone — the defender’s artefact, the mirror of theLesson + quiz
  204. 204THE GYM, COMPLETE — THE ATTACK AND THE DEFENCE, ON GROUND YOU OWNLesson + quiz
  205. 205Three takeawaysLesson + quiz
  206. 206with the artefacts (the flag habit + the readouts) — the hands-on proof thatLesson + quiz
Defensive Cybersecurity: From First Steps to Expert
Proactive digital defense protects everything you build in school, work, and business. This training guides you through identifying system vulnerabilities, stopping malicious software, safeguarding private networks, and setting up unbreakable firewalls.

It is perfect for ambitious minds ready to start without any prior experience, gain advanced technical capabilities, and operate with complete confidence against modern threats.

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