Easier to read with cream paper, a tint, more contrast or larger text? Choose your colours and text, once, for every page.

Preview

CS 2.6: Prove the flaw, then write it up

This is the first page of the lesson. Read it and have a go at the activities. The rest is in the full lesson.

50 minutes

Show me, do not tell me

You tell a manager: "Our payroll server has a serious flaw." She says: "Prove it."

A safe test on a copy of the server shows the flaw is real. Then you must explain it to her, and later to the board, in words each of them can use.

Key words

WordWhat it meansExample
Proof of concepta safe test that shows a flaw is realPoC
Simulationa safe copy of the real thing used for a test
Authorisedallowed in writing by the owner
Recommendationadvice on what to do and why
Audiencethe people who will read or hear your report
Terminologythe special words used in a job or subject
Boardthe senior group that makes the big decisions for an organisation
Evidencefacts that back up a claim

The cells students fill in are left blank in this preview.

By the end of this lesson

Note

I can plan a safe proof of concept and write a recommendation for a chosen audience.

Starter

Have a go

Starter

3 questions
Have a go: your answers are marked here and then forgotten. Sign in if you would like your score kept, and to pick up where you left off.Sign in to keep your score

Your answers are marked here and are not kept. A college account keeps every student’s marks.

A proof of concept confirms a flaw

A scanner may give a false positive. A proof of concept (PoC) checks whether the flaw can really be used.

You run the test in a simulation, on a copy of the system. You never test the live system without being authorised. The result is evidence: it turns a guess into a fact.

Rules for a safe proof of concept

RuleWhy
Get written permission firstTesting without it can be a crime
Use a copy, not the live systemA test could break the real service
Keep a record of every stepOthers can repeat it and trust it
Stop once the flaw is provedNever take more data than you must
Delete the test copies afterwardsCopies of real data are a risk too

The cells students fill in are left blank in this preview.

Check

Have a go

Check

3 questions
Have a go: your answers are marked here and then forgotten. Sign in if you would like your score kept, and to pick up where you left off.Sign in to keep your score

Your answers are marked here and are not kept. A college account keeps every student’s marks.

The lesson goes on

8 more parts of this lesson are in the full curriculum, with the tasks, the final check and the labs. A college account gives your students all of it.