OpenCyber AcademyLesson map
Lesson 13. Map, example, EX059.
flowchart TD
A["Last year the renewal failed silently"] --> B["The certificate expired"]
B --> C{"Is a warning dated this course?"}
C -->|No| D["Keep the advice, not a new incident"]
C -->|Yes| E["That date is not in the file"]
The old outage explains the calendar. It does not open a fresh incident.
Logical drawing
last year
host renewal failed silently
certificate expired
browsers showed warnings
cause is not an intrusion
this course
advice: do not click through
no dated warning in the file
Learning outcomes
After this chapter, you should be able to:
- Keep last year's cause as a silent renewal failure.
- Keep the click-through ban.
- Leave this course without a dated warning.
13.1 An expired certificate and a rule are not the same event.
Chapter 3 says the library website showed warnings last year because the web host's automatic renewal failed silently and the certificate expired. The exercise that asks about that outage rejects "hacked" as the cause. The staff summary's third finding is advice: do not click through certificate warnings. No sentence dates a warning during Leo's month, names a browser, or says he saw one. A classmate who files "warning, this week" has moved last year into the current notes. A classmate who clicks through "because it happened before and was only expiry" breaks the rule Inês gave for a site that should be trusted. Leo keeps the historical cause and the present advice in separate lines.
13.2 Worked example
Lesson table; scroll horizontally to read all columns →
| What someone cites | What the file holds | Decision |
|---|---|---|
| Silent renewal failure | Last year's cause | Keep the cause |
| "Hacked" | Rejected by the earlier exercise | Keep it rejected |
| Do not click through | The standing rule | Keep the rule |
| A warning dated this course | Not in the file | Refuse |
Synthetic case. No browser name and no new warning date are added.
Errors and limits
Separating the year from the rule does not make either one unimportant.
Apply
- EX059 — Which warning? Last year the host renewal failed silently and the certificate expired. The summary advises staff not to click through a warning. Is there a dated certificate warning during this course?
Show marking criteria
Rubric: 3 = no dated warning this course; last year's cause stays the silent renewal failure; it was not an intrusion; the click-through ban stays; do not invent a date;; 2 = the old cause and the rule stay apart;; 1 = one fact;; 0 = none.